Fangrui Product Details 1. Support Tablets, Laptops, Mobile Phones, Such As Air, Mini, Pro, Xs Max, Etc. (devices Without Bluetooth Need To Purchase A Bluetooth Receiver By Themselves) 2. Ultra-thin, Light And Portable:this Bluetooth Keyboard Is Designed For Anyone Who Needs A Portable Keyboard For Work Or Play, Especially For Business Travel. 3. Charging And Automatic Sleep Mode:the Universal Wireless Bluetooth Keyboard Uses A Built-in Lithium Battery, Which Can Be Easily Through A Usb Cable, No Need To The Battery. The Built-in Rechargeable Battery Is Very Long-lasting, With A Standby Time Of About 6 Months On A Charge. The Bluetooth Wireless Keyboard Can Automatically Enter Sleep Mode To Save Energy. 4. Stable Connection:advanced Bluetooth Technology Provides Wireless Connectivity With A Working Range Of 10 Meters. But For Desktop Laptops Without Bluetooth Function, You Need To Plug In A Bluetooth Adapter (not Included) To Install The Bluetooth Driver To Use. 5. Comfortable And Quiet Typing:quiet, Low-profile Keys Br