Name: keyboard Keyboard size: 304.5 x 97.95 x 8mm (expanded) Touchpad size: 54.8 x 44.8mm Working voltage: 3.7V Using touchpad current: less than 8.63mA Standby current: 0.25mA Sleep current: 60uA : 10 minutes Working distance less than 15m Lithium battery content: 140mAh : any keyboard Type: Bluetooth keyboard Number of keys: 63 (keys) Interface: Bluetooth Whether to support plug and play support: Yes Connection with computer: Bluetooth Is there a multimedia function key: Yes Shortcut key: Yes Key technology: X architecture Whether to support ergonomics: support colour:Black Material:ABS Package Contents: 1 x Keyboard 1 x usb line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.