lenovo battery 00NY486 48Wh 4.4Ah Battery Replacement for Lenovo ThinkPad L560 20F1 20F2 L570 20J8 20J9 20JQ 20JR Series Laptop SB10H45071 00NY487 SB10H45072 00NY488 SB10H45073 00NY489 SB10H45074 71+ 10.8V About this item 【Battery Model】00NY486; Voltage:10.8V; Capatity:48Wh 4.4Ah 6-Cells; Color:Black; Condition:Brand New. 【Replacement Part Number】00NY486 SB10H45071 00NY487 SB10H45072 00NY488 SB10H45073 00NY489 SB10H45074 71+ 【Compatible Machine Models】 for Lenovo ThinkPad L560 (Type 20F1 20F2) Series; for Lenovo ThinkPad L570 (type 20J8 20J9 20JQ 20JR) Series 【Security Certified】 Certified by CE, UL, FCC, and RoHS for safety. Every battery has passed factory testing, built-in circuit protection ensures safety and stability. More than 500 recharge cycles over the life of the battery.
WIWU S400 Aluminum Laptop Stand Portable, Adjustable and Foldable - Silver WIWU S400 Aluminum Laptop Stand Portable, Adjustable and Foldable – Silver
COMPACT AND WIRELESS Enjoy the freedom of wireless with this versatile combo. The compact keyboard is equipped with a number pad ideal for data entry, calculations and navigation, so you can get more work done in less space. The ambidextrous mouse delivers smooth tracking and scrolling, for easy navigation -at home or at work. COMPACT AND WIRELESS Enjoy the freedom of wireless with this versatile combo. The compact keyboard is equipped with a number pad ideal for data entry, calculations and navigation, so you can get more work done in less space. The ambidextrous mouse delivers smooth tracking and scrolling, for easy navigation -at home or at work. Height: 112 mm Width: 381 mm Depth: 17.78 mm Weight: 320 g Height: 107 mm Width: 60 mm Depth: 40 mm Weight: 112 g 10-Key Number pad Music Controls Up to 5 million keystrokes (excludes number lock key) Key type: Deep-profile Spill-resistant 2Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse the keyboard in liquid. 2 AAA batteries (Alkaline Batteries) Sensor Technology: Smooth Optical Tracking Number of Buttons: 3 (Left/Right-click, Middle click) Scrolling: line-by-line Scroll Wheel: Yes, optical 2 AA batteries (Alkaline batteries) Windows® 10,11 or later ChromeOS An available USB ports
Upgrade your workspace with a massive 27-inch Full HD canvas. Combining a high-speed 100Hz refresh rate with a stunning frameless IPS display, the B27M1 delivers an expansive, fluid viewing experience for professionals and creators alike. Model: Buerotika B27M1 Primary Specs: 27-inch Wide-Screen Display Display/Performance: IPS (In-Plane Switching) for 178° ultra-wide viewing angles Visual/Build Quality: 1920 x 1080 (Full HD) with vibrant color reproduction Aesthetic: 3-sided frameless “infinity” design for a sleek, modern desk setup Build: Lightweight, ultra-slim chassis with a space-saving minimalist stand Adjustability: Ergonomic tilt adjustment to match your eye level Input/Output: HDMI (High-Speed) and VGA ports Compatibility: Fully compatible with desktop PCs, laptops, and gaming consoles Smooth Motion: 100Hz Refresh Rate – 66% faster than standard monitors for reduced motion blur and lag. Eye Care: Integrated Flicker-Free technology and Low Blue Light filters for comfortable all-day use. Panel Quality: IPS technology ensures colors stay accurate even when viewed from the side. Enhanced Productivity: Large 27-inch screen allows for comfortable side-by-side window multitasking. Home Entertainment: Great for streaming and movies where a larger screen provides more impact. Education & Research: Easy-to-read text and large display area for students and writers. Casual Gaming: The 100Hz boost provides a competitive edge in smoothness over 60Hz displays.
WiWU WM108 Wimice Dual‑Mode Mouse – Bluetooth 5.0 and 2.4 GHz wireless mouse with 800/1200/1600 DPI, silent clicks, and ergonomic ABS housing.Long battery life (~6 months standby), USB dongle & silent design—ideal for travel, office, and quiet environments. Model: WiWU Wimice WM108 Connection Modes: Bluetooth 5.0 2.4 GHz wireless via USB dongle Connection Modes: Bluetooth 5.0 2.4 GHz wireless via USB dongle DPI Settings: 800 / 1,200 / 1,600 DPI (adjustable) Buttons: 3 standard buttons + clickable scroll wheel (4 keys total) Range: Up to 10 m wireless connectivity Material/Design: Lightweight (67–130 g, depending on source), ergonomic ABS plastic body, magnetic base or “super magnetic absorption” design Operating Range: ≈10 m Silent Clicks: Quiet operation—silent key action Dimensions: Approx. 108 × 64 × 36 mm Weight: 67 g cited by Star Tech and 130 g by others—likely lighter in official spec Compatibility: Windows, macOS, Linux, Android, etc. Plug-and-play, no driver needed
The LB-LINK AX900 USB WiFi adapter delivers fast and stable wireless connectivity with WiFi 6 technology and speeds up to 900Mbps. Featuring dual-band support (2.4GHz + 5GHz), it’s ideal for upgrading PCs and laptops for smoother streaming, gaming, and online work. The LB-LINK AX900 USB WiFi Adapter is a modern wireless solution designed to upgrade your computer to the latest WiFi 6 (802.11ax) standard. It offers improved speed, better network efficiency, and stronger stability compared to older WiFi adapters. With dual-band support, you can connect to either the 2.4GHz band for long-range stability or the 5GHz band for higher speed and lower latency. Its compact USB design makes it perfect for desktops and laptops needing fast internet without installing internal cards. WiFi 6 (802.11ax) Technology for faster performance and better efficiency AX900 Speed (Up to 900Mbps) for smooth streaming and downloads Dual Band Support: 2.4GHz + 5GHz for flexibility and stability USB Plug & Play easy installation (driver may be required) Low Latency Connection ideal for gaming and video calls Compact Portable Design perfect for laptops and desktops Improves WiFi Performance for weak built-in adapters Ideal for PCs and laptops that need faster WiFi speeds and stronger connectivity. Perfect for online gaming, HD streaming, Zoom/Teams meetings, and stable browsing.
Genuine-spec touchpad flex cable for MacBook Air 13″ (Model A1932, 2018–2019)—essential for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Air 13-inch (2018 & 2019, Model A1932, Model Identifier MacBookAir8,1) with Intel Core i5/i7 processors. Part Type: Touchpad flex cable only—does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits touch input, Force Touch pressure data, and haptic feedback signals—critical for macOS gestures like Force Click, three-finger lookup, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original in length, connector pitch, EMI shielding, and flexibility—ensures reliable signal integrity and long-term durability. Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is unusable Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is unusable Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and careful routing beneath the battery. The cable connects via a ZIF (Zero Insertion Force) socket on the logic board—must be properly aligned and latched without force. Recommended for experienced or certified technicians. Important: This is flex cable only—not a complete trackpad assembly. Must be used with the original or compatible A1932 trackpad and Taptic Engine. Not compatible with MacBook Air M1 (A2337/A2338), M2 (A2681/A2941), or any MacBook Pro model. This is flex cable only—not a complete trackpad assembly. Must be used with the original or compatible A1932 trackpad and Taptic Engine. Not compatible with MacBook Air M1 (A2337/A2338), M2 (A2681/A2941), or any MacBook Pro model.
Apple MacBook Pro 16” (2019) — professional-grade power and stunning Retina display.• Intel Core i9 • 32 GB RAM • 500 GB SSD • 4 GB Dedicated GraphicsRetina Display | macOS |
A sleek and durable pre-owned Lenovo ThinkPad T460s with 14" touchscreen, 6th Gen Core i5, 8GB RAM, and 256GB SSD—ideal for professionals who need portability, touch functionality, and trusted ThinkPad reliability.
A1990 Logic Board i7-16GB-512GB-4GB Intel 2.6 GHz Six Core i7 (I7-9750H) 16 GB RAM 512 GB SSD AMD Radeon Pro 555X 4GB Intel UHD Graphics 630 Intel 2.6 GHz Six Core i7 (I7-9750H) 16 GB RAM 512 GB SSD AMD Radeon Pro 555X 4GB Intel UHD Graphics 630
A1466 Laptop Replacement Battery for MacBook Air 13 inch A1466 (Mid 2012, Mid 2013,Early 2014, Early 2015,2017) A1369(Late 2010,Mid 2011 Version) High Performance 7200mAh fits A1496 A1405 A1377 A1496 A1405 A1377 Macbook Air Battery: 7200mAh/55Wh, Voltage: 7.6V, can up to 500 charging cycles; (Compatible with 7.4V/53.28Wh) Manufacturing standards are the same as those of the original battery supplier Replacement For: Macbook Air 13-inch A1466 battery (2017, Early 2015, Early 2014, Mid 2013), A1369 battery (Late 2010, Mid 2011). EMC Applicable number: 2469 2559 2392 2632 2925 3178 (“Ctrl” + “F” to find your models), But note: Not for MacBook Air 11″ A1465, A1495, A1406, A1370 10 years of professional production: Introduce American high-end battery chips, low power design to reach long battery life. Built-in circuit protection ensures battery both safety and stability. Offer Over-charge & over-discharge& short-circuit protection. Certified safe By UL/ CE/ FCC and RoHS. Compatible With MacBook Air 13 inch Computer Model: MC503LL/A, MC504LL/A, MC965LL/A, MC966LL/A, MD231LL/A, MD232LL/A, MD760LL/A, MD761LL/A, MD760LL/B, MD761LL/B, MJVE2LL/A, MJVG2LL/A, MC503LL/A, 【Please Check Your MacBook Model correctly match our battery. You can access this information on your computer by Logo on the upper left corner of the MacBook screen–> About this Mac】
A premium ultralight pre-owned Lenovo ThinkPad T14s Gen 3 with 14" display, AMD Ryzen 7 6850U, 16GB RAM, and 512GB SSD—delivering exceptional performance, all-day battery life, and workstation-class integrated graphics in a featherlight business laptop.
MIC K9 WIRELESS ( LIGHTNING ) FOR IPHONE BLACK MICROPHONE MIC K9 WIRELESS ( LIGHTNING ) FOR IPHONE BLACK MICROPHONE 20M Connection distance for 360° RADIO Wireless lavalier microphone use 2.4G connection, which is more stable than the Bluetooth microphone, and the transmission distance can reach 65 feet without wires. Built-in omnidirectional condenser microphone, can capture sound in all directions, 360° wide-range recording, no dead ends, and avoid missing recording. Automatic Synchronization of Noise Reduction Mini lapel mic has advanced intelligent noise reduction technology and windshield, which can filter out most of the external noise and wind noise, and clearly present the recording content. It can synchronize the background music and human voice of the mobile phone in real time, reduce video post-processing, and provide professional full-band audio. 10H Working Time The wireless lavalier microphone has a built-in rechargeable battery, which can provide more than 10hours of battery life after about 2 hours of charging. The ultra-low delay of 0.015S ensures the synchronization of audio and video, bringing a better experience to your game live broadcast, and staying away from the trouble of delay.
SanDisk 2TB Portable SSD - Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware - External Solid State Drive - SDSSDE30-2T00-G26 SanDisk 2TB Portable SSD – Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware – External Solid State Drive – SDSSDE30-2T00-G26 About this item Solid state performance with up to 800MB/s read speeds in a portable drive. (Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.) Back up your content and memories on a storage solution that fits seamlessly into your mobile lifestyle. Take it with you on your adventures—up to two-meter drop protection means this durable drive can take a beating. (Based on internal testing.) Secure it to your belt loop or backpack for extra peace of mind thanks to the tough rubber hook. From SanDisk, a brand professional photographers trust to take on assignments.
NCTS USB Barcode Scanner – High-speed wired scanner for both 1D and 2D barcodes with auto-sensing mode.Plug-and-play solution ideal for retail, inventory, and logistics operations. Model: NCTS 1D/2D Barcode Scanner (USB Wired) Color: Black Scan Type: Image-based CMOS scanner Supported Barcode Types: 1D: Code 128, Code 39, EAN-13, UPC-A, Codabar, ISBN, etc. 2D: QR Code, PDF417, Data Matrix, Aztec, etc. Supported Barcode Types: 1D: Code 128, Code 39, EAN-13, UPC-A, Codabar, ISBN, etc. 2D: QR Code, PDF417, Data Matrix, Aztec, etc. Interface: USB 2.0 (Plug-and-play, no driver required) Scan Speed: Up to 300 scans/second Resolution: ≥ 4mil (0.1mm) Scan Modes: Manual trigger Auto-sensing Continuous mode Scan Modes: Manual trigger Auto-sensing Continuous mode Light Source: White LED illumination + red aiming line Indicators: LED and buzzer for scan confirmation Power Supply: DC 5V (via USB port) Cable Length: ~1.5 meters Build: ABS plastic, ergonomic handheld design Compatibility: Windows, macOS, Linux, Android Applications: POS, inventory, logistics, healthcare, warehouse use
Genuine-spec keyboard replacement for MacBook Air 13″ (Model A2179, 2020, Intel) — choose US QWERTY or UK QWERTY (with £ symbol). Features Apple’s reliable scissor-switch mechanism, backlighting, and OEM-fit design for seamless performance and aesthetics. Compatible With: MacBook Air 13-inch (2020, Model A2179, EMC 3597) with Intel Core i3/i5/i7 processors (non-M1). Layout Options (select at purchase): US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. Keyboard Type: Traditional scissor-switch mechanism (not Butterfly, not Magic Keyboard)—robust, tactile, and serviceable, with good key travel and proven durability. Integrated Features: Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Precision Build: Molded to exact Apple specifications—ensures flush mounting, consistent key alignment, and seamless integration into the original top case. Installation Note: Keyboard is screw-mounted with light adhesive—more accessible than glued Butterfly/Magic keyboards. Requires top case access and battery disconnect. Suitable for intermediate DIYers or professional technicians. Important: This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). Model Verification: Confirm your device is MacBook Air A2179 (13″, Intel, 2020) via > About This Mac > Model Identifier (e.g., MacBookAir9,1).
The Arzopa A1 is an ultra-slim, lightweight 15.6-inch portable monitor engineered for seamless travel productivity and entertainment. Delivering crisp Full HD imagery on a premium IPS panel with integrated eye care features, it provides a hassle-free plug-and-play experience using dual full-function USB-C and Mini HDMI inputs. Complete with a built-in adjustable kickstand, it is the perfect dual-screen companion for laptops, smartphones, and gaming consoles. ✅ Full Specifications: Model: ARZOPA Type-C Portable Monitor (ARZOPA-A1) Interface / Connection: Multi-Port Input Panel: 2 x USB Type-C Full Function Ports (Supports concurrent video transmission, data, and power delivery) 1 x Mini HDMI Port (Video signal input only) 1 x 3.5mm Headphone / Audio Output Interface Interface / Connection: Multi-Port Input Panel: 2 x USB Type-C Full Function Ports (Supports concurrent video transmission, data, and power delivery) 1 x Mini HDMI Port (Video signal input only) 1 x 3.5mm Headphone / Audio Output Interface Performance / Screen Quality: Panel Type: IPS (In-Plane Switching) display with 178° wide viewing angles Resolution: Full HD 1920 x 1080p Refresh Rate: 60Hz Aspect Ratio: 16:9 Brightness: 300 cd/m² Contrast Ratio: 1200:1 Display Colors: 262K (8-bit) Color Gamut: 45% NTSC / 72% sRGB space coverage Performance / Screen Quality: Panel Type: IPS (In-Plane Switching) display with 178° wide viewing angles Resolution: Full HD 1920 x 1080p Refresh Rate: 60Hz Aspect Ratio: 16:9 Brightness: 300 cd/m² Contrast Ratio: 1200:1 Display Colors: 262K (8-bit) Color Gamut: 45% NTSC / 72% sRGB space coverage Display Technology: Features built-in HDR rendering technology to boost dynamic contrast alongside a Low Blue Light comfort filter to reduce eye fatigue. Audio: Dual built-in stereo speakers (1W x 2 configuration). Material & Build: Premium, durable metal housing constructed out of a sleek aluminum alloy framework. Design & Form Factor: Ultra-thin bezel layout boasting an integrated adjustable smart kickstand for multi-angle landscape deployment. Power Setup: Driverless plug-and-play architecture. Operates without an internal battery; runs on host device power distribution via USB-C or requires an external 5V/3A power input adapter. Compatibility: Fully compatible with MacBooks, Windows PCs/Laptops, Chromebooks, USB-C supported Android smartphones, and modern gaming consoles (Nintendo Switch, Xbox Series X/S, PS4, PS5). Dimensions: Approx. 355.6 x 220.9 x 9.14 mm (Ultra-slim 0.36-inch profile) Weight: Approx. 725 to 735 grams (1.6 lbs lightweight chassis)
HT03XL L11119-855 Laptop Battery for HP Pavilion 14-CE 14-CF 14-DF 15-CS 15-DA 15-DB 15-DW 17-by 17-CA Series 15-CS0053CL 15-DW0033NR 15-DA0014DX L11421-542 L11421-2C2 HSTNN-UB7J HSTNN-DB8R HT03041XL About this item Compatible with: HP HT03XL Battery, for HP Pavilion 14-CE 14-CF 14-CK 14-cm 14-DF 14-MA 14Q-CS 14Q-CY 14S-CF 14S-CR 15-CS 15-CW 15-DA 15-DB 15G-DR 15T-DA 15T-DB 17-by 17-CA Series 14-CE0000 14-CE0020TX 14-CE0025TX 14-CE0027TU 14-CE0028TX 14-CE0029TX 14-CE0030TX 14-CE0034TX 14-CE1058WM 14-CE0068ST 14-CE1056WM 14-CE0064ST 14-CE0006DX 14-CF0000 14-CF0014DX 14-CF1015CL 14-CM0000 14-CM0020NR 14-CM0012NR 14Q-CS0000 14Q-CS0006TU 15-CR0000 15-CR0087CL 15-CR0052OD 15-CR0055OD 15-CR0037WM 15-CR0051CL 15-CR0091MS 15-CR0010NR Replacement Battery for HP Pavilion 15-CS0000 15-CS2010NR 15-CS025CL 15-CS2073CL 15-CS2079NR 15-CS1063CL 15-CS0072WM 15-CS0051WM 15-CS1065CL 15-CW0000 15-CW1063WM 15-DA0000 15-DA0066CL 15-DA0002DX 15-DA0079NR 15-DA1005DX 15-DA0032WM 15-DA0033WM 15-DA0073MS 15-DA0012DX 15-DA0071MS 15-DA0086OD 15-DB0000 15-DB0015DX 15-DB0031NR 15-DB0011DX 15-DB0066WM 15-DB0005DX 15-DB0048NR 15-DB0051OD 15-DB0048CA 17-BY0000 17-BY1053DX 17-BY1033DX 17-BY0060NR 17-BY0021DX 17-BY0053CL 17-BY0021CY 17-BY1055CL Laptop Compatible for HP Pavilion 240 G7, 245 G7, 250 G7, 255 G7, 340 G5, 348 G5 Series;P/N: HSTNN-DB8R HSTNN-DB8S HSTNN-IB80 HSTNN-IB8O HSTNN-LB8L HSTNN-LB8M HSTNN-UB7J HT03041XL HTO3XL HT03XL L11119-855 L11421-1C1 L11421-1C2 L11421-2C1 L11421-2C2 L11421 -2C3 L11421-2D1 L11421-2D2 L11421-421 L11421-422 L11421-423 L11421-542 L11421-544 L11421-545 TPN-C136 TPN-I130 TPN-I131 TPN-I132 TPN-I133 TPN-I134 TPN-Q207 TPN-Q208 TPN-Q209 TPN-Q210 Specifications: ht03xl battery for hp, Battery Type: Li-ion Voltage: 11.55V Capacity: 41.7WH 3470mAh;Cells: 3-cell; Color: Black Packages includes: l11119-855 hp battery, with Two Free Screwdrivers; HTO3XL Battery for hp model 15-cs0085cl 15-cs0073cl 15-cs3075cl 15-cs3073c 15t-cs300 15t-cs200 15-da0021cy 15-da0011la 15t-db000 14-cf0013dx 14-cf0051od 15-ef0023dx Compatible devices: HP HT03XL Rechargeable li-ion Battery, for HP Pavilion 14-CE 14-CF 14-CK 14-cm 14-DF 14-DH 14-MA 14Q-CS 14Q-CY 14S-CF 14S-CR 15-CS 15-CW 15-DA 15-DB 15G-DR 15T-DA 15T-DB 17-by 17-CA Series 15-cs0053cl 15-cs1063cl 15-cs2064st 15-cs3063cl 15-cs3075cl 15t-cs200 15-da0032wm 15-da0014dx 17-by0063cl 17-by2075cl 17-by0071cl 17-by1022cl 17-by0088cl 17-by0062st 17-by0020cy 17-by0017cy 17-by1003cy 17-ca1010ds 17-by0019ds 17-by2003ca 17-by3613dx 17-by1972cl 17-ca1031dx 17-ca1061nr 17-ca0054cl
Barcode Reader Wireless 2D S20W Wireless 2D Barcode Scanner | S20-W Name: Wireless 2D Barcode Scanner Model: S20-W Interface: USB Color: Black
The SHL-R320 is a high-speed, dual-protocol M.2 SSD external enclosure featuring a durable aluminum casing for excellent heat dissipation. Supporting both NVMe and SATA protocols, it provides an easy, pocket-sized solution to convert internal solid-state drives into ultra-fast portable storage. ✅ Full Specifications: Model: M.2 SSD Hard Drive Enclosure Case (SHL-R320) Interface: USB 3.1 Gen 2 Type-C (Backward compatible with USB 3.0 / USB 2.0) Protocol Support: Dual Protocol — Supports both NVMe PCIe (M-Key / B+M Key) and NGFF SATA (B+M Key) Transmission Speed: NVMe: Up to 10Gbps SATA/NGFF: Up to 6Gbps Transmission Speed: NVMe: Up to 10Gbps SATA/NGFF: Up to 6Gbps Drive Size Compatibility: Supports M.2 SSD sizes 2230 / 2242 / 2260 / 2280 Capacity Support: Supports up to 2TB (and higher depending on drive configurations) Material: Premium Aluminum Alloy shell for enhanced durability and thermal cooling Design: Slim, compact, and lightweight pocket-sized form factor Features: Tool-free/screw installation layout (varies by kit variation) and built-in UASP protocol support for accelerated transmission. Compatibility: Windows 11 / 10 / 7, macOS / iOS, Linux, Android (with OTG support), and Smart TVs Dimensions: Approx. 119 x 38 x 13 mm