Ultra Slim Wireless Bluetooth Rechargeable Keyboard

Wireless connection type: Bluetooth 5.0/3.0 ; 2.4 GHz Battery power supply: DC 3.3-4.2V, <5mA Transmission frequency: 2.400GHz-2.4835GHz Transmission range: up to 10m Key layout: 99 buttons Rechargeable battery: Lithium 400 mAh Material: Aluminum alloy + PVC Compatibility: Windows 7/ 8.1/ 10/ 11, macOS 10.15 and higher, iOS 13.4 and higher, iPadOS 14.0 and higher, Linux, Chrome OS, Android 5.0 and higher