BLUETOOTH 3.0 CONNECTION: Bluetooth 3.0 technology provides a cable-free & clutter-free connection, the external 10-keys full keypad extends your existing keyboard, operating distance 10m. No need USB dongle. NOTE: For Desktop PC Laptop without bluetooth function, you need to use third-party bluetooth adapter (not included) before use MULTI-FUNCTION 28-KEYS NUMBER PAD : Full-sized 28-key with Numlock, Delete, Tab & More, Use the wireless keypad with 28 function keys including backspace, home, end, tab and more to assist in accounting tasks, excel spreadsheets, and more to expand your existing keyboard COMPATIBILITY :Widely Compatible with Windows 2000/ Me/ 98/ XP /Vista/ 7/ 8/10, Android, Surface Pro 3, Pro 4, Android Cellphone Tablet PC Laptop Desktop etc. NOTE: This bluetooth number pad is NOT fully compatible with ChromeBook, Mac OS, Macbook system and Apple iPad iPhone iOS system, Calculator Key, Numlock and Functional Keys can not work, but other number keys work well SOFT TOUCH - HIGH-END SCISSOR SWITCHES KEYPAD : Comfortable typing precise control, good resilience fast response and reduce the press sound, Give Quiet Office Operation & Long-Life. Slim design lets you take the Keypad anywhere ERGONOMIC AND POWER SAVING: pads on back provide optimum comfort and securely keep the bluetooth numpad in place. It will auto power-saving mode when not in use for 15 minutes, press any key can wake up within 3 seconds 1458Perfect after-sales service: If you have any quality issues or do not like it after receiving it, please contact us and we provide free return and exchange services