Specification: Item Type: Mini Keyboard Applicable Models: Suitable tablet computers Model: HB028 Color: White Main Material: ABS Number of Buttons: 59 Bluetooth Chip and Version: For Broadcom chip Bluetooth 3.0 Battery Capacity: 150mAh (included) Charging Interface: Micro USB Charging Time: 1 to 2 hours Standby Time: 30 Days Use Working Voltage: 3.0~5.0V Button Life Times: 100 Million Effective Use Distance: Approx. 10meters / 32.8ft Package List: 1 x Charging Cable 1 x Bluetooth Keyboard 1 x English User Manual