Specification: Item Type: Wireless for Bluetooth Keyboard Material: ABS Connection: Wireless for Bluetooth 3.0 Effective Operating Distance: Within approx. 10meter / 32.8ft Modulation Method: GFSK Button Force: 80±10g Button Life: About 5 million clicks Battery: 200mAh lithium battery Standby Time: >100 days Charging Time: 3-4h Sustainable Working Hours: 100h Applicable System: Compatible for Windows/OS X/Android/IOS Size: Approx. 15 x 25 x 0.5cm / 5.9 x 9.8 x 0.2in Package List: 1 x Keyboard 1 x Data Line 1 x User Manual