[ Boardcom US Bluetooth 5.1 Chipset ]-Low latency and stable performance,an assurance for high quality keyboard. [ Ultra Big Touchpad with Left&Right Click ]-Maximumly approach the user experience of laptop touchpad. [ 3 Channels Bluetooth Connection ] -3 bluetooth device can connect with the folding keyboard and switch between each other randomly. [ Big Size Keycap&Scissors Switch ] -1:1keycap size &layout as laptop and comfortable scissors switch. [ Rechargeable Lithium Battery ] -Build in 210mAh big capacity rechargeable lithium battery,long standby time and environment friendly. [ Multi System Compatible ] -Compatible with Windows,Android,IOS and Mac(Desk,lock key can not use),fully satisfy your of input requirement. [ Textured PU Leather Back Cover ] -Nice hand feeling and business style. [ Tri Folding Keyboard ] -Combine the nice input user experience of standard size keyboard and portable mini size advantage into one keyboard.