SLIM ALUMINUM DESIGN: Lekvey Bluetooth number pad is constructed of solid and premium aluminum materials for long-lasting use, the ergonomic tilt for comfortable typing and good look, slim style appearance ( Only 0.46lb, 5.7*4.4*0.47 inch ), perfectly matches your Macbook, MacBook Air / Pro, iMac, PC, surface pro, laptop or desktop as the side external numeric keypad. BLUETOOTH 3.0 CONNECTION: Bluetooth 3.0 technology provides a cable-free & clutter-free connection, the external 34-keys full keypad extends your existing keyboard, operating distance 10m. 【NOTE: For Laptop Desktop PC without Bluetooth function, you need to use 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 through the included USB cable, no need to change the battery and user- friendly. The Bluetooth wireless keypad also has the auto sleep function, lower power consumption, reflect energy saving and humanization of the product. Press any key can wake up the keypad within 3 seconds. WIDELY COMPATIBLE: This Bluetooth wireless number pad it includes shortcut keys and low profile quiet scissor-switch keys so you can work comfortably on your computer or laptop. Compatible with Windows, Android, iMac, MacBook Pro, MacBook Air, MacBook, Surface Pro, Tablet PC Desktop laptop, etc.【 NOTE: The 10-key is NOT compatible with ChromeBook. And the "page up", "page down", "search", "screenshot" and "ins" key won't work with Mac OS, but other keys and number keys work well 】