Product Type:Numeric Keypad / Numeric Keyboard Wireless Number Pad: 34-key with Numlock, Delete, Tab & More, Use the numeric keyboard with function keys including backspace, home, end, tab and more. BLUETOOTH 3.0 : Bluetooth 3.0 technology provides a cable-free & clutter-free connection, operating distance 10m. Rechargeable Battery: Built-in 160mAh lithium rechargeable battery, which can be easily recharged by USB cable Power Saving: This numberic keyboard also has the auto sleep function, lower power consumption, which can help save power. You can wake it up within 3 seconds by pressing any key. Wide Compatibility- Windows / Android / iOS / OS: This wireless bluetooth number pad is Compatible with Windows 2000/ Me/ 98/ XP /Vista/ 7/ 8/10, Android, Samsung, Surface Pro 3, Pro 4, Android Cellphone Tablet PC Laptop Desktop etc. Aluminum Alloy Material: Very sturdy and durable, the ergonomic design and half-height buttons also help prevent wrist problems. NOTE: When use on iOS and OS system device, Calculator Key and Functional Keys cannot work but other number and symbol keys ESC, Tab work well.