[Boardcom US Bluetooth 5.1 Chipset] - Low latency and stable performance,an assurance for high quality keyboard.[Ultra Big Touchpad with 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 (Desk,lock key can not use),fully satisfy your of input requirement.[Textured PU Leather Back Cover] - Nice hand feeling and business style.[ Folding Keyboard] - Combine the nice input user experience of standard size keyboard and portable mini size advantage into one keyboard.Language Version:English/Russian/Brazil PortugueseChipset:Broadcom US bluetooth 5.1Connnection Channel Quantity:3 channelsWeight:227gWorking Voltage:3.7VWorking Current of Touchpad:Less than 10mAStandby Current:Less than 1mAWorking Currecnt of Key:Less than 4mASleeping Currecnt:17uASleeping Time:10 minutesWorking Distance:10mLithium Battery Capacity:210mAhWake Up :Press any keyApplication:for Windows/IOS/Android/Colour:BlackMaterial:ABSSize:Keyboard Size:346.86 x 106.09 x 8.8mm(open), 187 x 106.09 x 17.8mm(folding); Touchpad Size:92.1 x 67.46mmPackage Contents:1 * Foldable Bluetooth KeyboardOnly the above package content, other products are not included.Note: Light reflection 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.