Features: brand new and high quality US Bluetooth-compatible 5.1 Chipset :Lowlatency and stable performance, high quality keyboard. Ultra Big Touchpad with Left&Right Click :Maximumly approach the user experience of laptop touchpad. 3 Channel Bluetooth-compatible Connection:3 bluetooth-compatible 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 for time and environment friendly. Multi Systems Compatible : for Windows,Android,IOS(Desk,lock for 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. Specifications: Chipset: US bluetooth-compatible 5.1 Connnection Channel Quantity: 3 channel Materials:ABS Keyboard Size:(approx.) 346.86x106.09x8.8mm/13.66x4.18x0.35in (open) 187x106.09x17.8mm/7.36x4.18x0.70in (folding) Touchpad Size: approx. 92.1x67.46mm/3.63x2.66in Working Voltage:3.7V Working Current of Touchpad:<10mA Standby Current:<1mA Working Currecnt of Key:<4mA Sleeping Currecnt:17uA Sleeping Time:10 minutes Working Distance:10m Lithium Battery Capacity:210mAh Application:Windows/IOS/Android Package Includes: 1PC x Foldable Bluetooth-compatible Keyboard note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!