Material: ABS+aluminum alloy colour: black Package Contents: 1 x Bluetooth Number Pad 1 x USB Cable 1 x Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Universal Compatibility - Bluetooth and 2.4G USB wireless connections make this wireless keyboard support all Bluetooth-enabled devices or devices with USB ports. Dual Mode Widely Compatible with OS, iOS, Windows, Linux and Android, Works with /8/7 Computer, Desktop, PC, Laptop, , Air, Pro, Mini, , smartphones/tablets such as Galaxy, Surface, etc. Dual Mode - Stable Bluetooth 5.0 and 2.4G USB connection. Connect this 3-in-1 wireless numeric keypad via Bluetooth or 2.4G USB receiver! Whether you to connect via RF USB dongle or Bluetooth 2.4G, the Bluetooth Numeric Keypad offers both connectivity . The for spreadsheet workers, accountants and financial personnel. Luxurious, Look & Slim Aluminum Design - Ultra-thin, lightweight design, sleek and attractive look, and sturdy premium aluminum construction. The 15° ergonomic tilt and advanced silent scissor key a comfortable and typing experience, keep quiet and work efficiency. Capacity Rechargeable Battery - Built-in 300mA long-lasting rechargeable battery. This Bluetooth wireless numeric keyboard can type continuously for up to 120 hours on a single charge. Add low battery indicator and auto sleep power saving function to reduce unnecessary energy use, press any key to wake up the bluetooth 10-key keypad within 3 seconds. Includes charging cable. Easy to use on multiple devices - pair up to 3 devices simultaneously. Just press FN+2.4G/BT1/BT2 to and seamlessly switch between 3 devices. Supports NumLock, ESC, Tab, Delete, $, %, shortcut keys to directly open the computer calculator, etc. This multi-device Bluetooth numeric keypad is perfect for those who work with multiple devices.