Size:10.5inch | Color:Black/Black Product parameters Battery capacity: 250MAH Charging time: 2-3 hours Working current: 2.5 - 3.5MA Charging current: 200mA Lithium battery life: 3years Chip: Bluetooth version 3.0 Features: 1.Product material: high quality ABS plastic frame, aluminum keyboard 2.Support system: IOS system 3.Built-in Bluetooth module 3.0. 4.Case compatible with 12.9 inch iPad Pro 5.360º Degree Rotatatle Swivel Stand Multifunctional Keyboard. 6.Comfortable ABS keys create an easy, fast and smooth typing experience 7.Provides maximum protection against dirt, scratches, stains ,splashes or dents. 8.Allow full access to all ports and feature 9.Energy saving in sleep mode.