1Dual Modes: This wireless number pad with touchpad adopts BT and 2.4G connection, which ensures fast connection. 2Widely Compatible: This wireless number pad with touchpad is suitable for Win, for IOS, for Android and for OS X. 3Touch Pad: This wireless number pad with touchpad is also equipped with a touch pad that could provide you with more control experience. 4Portable Size: This wireless number pad with touchpad is small in size and light in weight, very convenient and portable. 5500mAh Battery: This wireless number pad adopts inbuilt 500mAh battery, and providing maximum 10.9yd transmission distance. Item Type: Wireless Number PadMaterial: ABSSupported Systems: For IOS, For Android, For WinKey: 22 KeysWireless/BT: Nordic(nRF51802) BT + 2.4G Dual ModesBTVersion: BT 4.2Keyboard Life (Times of Pressing): 5 MillionResponse Time :30 MSWireless/BT: Transmission Distance: Approx. 10 Meters / 10.94ydOperating Current/voltage :1mA/3.7V (Typing) 7mA/3.7V (Touch)Built-in Lithium Battery Capacity: 500mAh (Battery Included)Charging Time: 3 HoursCharging Port Type: Type CUse Time: More Than 6 HoursStandby Time: >6 Months Package List 1 x Wireless Number Pad1 x Charging Line1 x 2.4G Receiver1 x User Manual