Compatible devices Laptop, PC, Tablet Bluetooth connectivity technology Ergonomic keyboard Special feature Ergonomic, Rechargeable Bluetooth color - Black Operating system Windows, Mac os, IOS, Android Number of keys 34 Item dimensions LxWxH 5.7 x 3.4 x 0.36 inches br> Material Aluminum About this item THIN ALUMINUM DESIGN: Lekvey Bluetooth number pad is made from strong and premium aluminum materials for usedurable, ergonomic tilt for comfortable typing and beautiful appearance, slim style appearance (only 0.46 lbs, 5.7*4.4*0.47 inches), perfectly matches your Macbook, MacBook Air/Pro, iMac, PC, surface pro, laptop or desktop as a side-mounted external numeric keypad. BLUETOOTH 3.0 CONNECTION: Bluetooth 3.0 technology provides a wireless, cable-free connection;Clutter-free connection, external 34-key full keyboard extends your existing keyboard, 10m operating distance.NOTE: For desktop laptops without Bluetooth function, you need to use a third-party Bluetooth adapter (not included) before use HIGH-CAPACITY RECHARGEABLE BATTERY: Built-in 160mAh lithium rechargeable battery.The Bluetooth numeric keypad is easily recharged via the included USB cable, no need to change the battery and user-friendly.The Bluetooth wireless keyboard also has the automatic sleep function, lower power consumption, reflects the energy saving and humanization of the product.Press any key to wake the keyboard in 3 seconds. WIDELY COMPATIBLE: This Bluetooth wireless number pad includes hotkeys and low-profile quiet scissor switch keys so you canwork comfortably on your computer or laptop.Compatible with Windows, Android, iMac, MacBook Pro, MacBook Air, MacBook, Surface Pro, Laptop Desktop Tablet PC, etc.NOTE: Key 10 is NOT compatible with ChromeBook.And the page up, page down, search, screenshot and ins keys will not work with Mac OS, but other keys and number keys work well