2.4G & Bluetooth Keyboard with Phone Holder -- Seenda wireless keyboard features with Bluetooth 4.0 and 2.4G wireless connection technology.Choose the most appropriate method for different devices, make your work and life easier(The USB receiver is stored at the back of the keyboard)⌨Function Across Three Devices -- This dual mode wireless bluetooth keyboard can connect up to 3 devices simultaneously:1 USB device and 2 bluetooth devices.You can switch easily between devices by a single click⌨Energy Saving & Silicone Keyboard Cover -- Our multi-device keyboard comes with a silicone keyboard cover so it can provide perfectly protection for the keyboard.Waterproof and Dustproof.There is a independent ON/OFF switch on the right top of the keyboard.Save battery life and reduce battery replacement.The ergonomic wireless keyboard is powered by 2 AAA batteries(Batteries are not included)⌨Convenient Hot Keys & Fn Lock -- Hot keys like Mute,play/pause,volume up and down help you increase your workflow and productivity.The keyboard has Fn lock key so you can turn on /off the multi-media function keys by pressing Fn + lock key(The key on the right of the F12)⌨Wide Compatibility -- Widely compatible with Cellphone Tablet PC laptop Desktop with Android Windows iOS and Mac OS system.You will get a 30-DAY MONEY BACK & 12-MONTH WARRANTY GUARANTEE for the computer wireless keyboard you ordered.If you received defective item or have any issues while using, you are welcome to contact us at anytime, and we will get back to you within 24 hours. NOTE: NOT FULLY compatible with Mac OS Monterey 12.0.1 or above