Easy Connect up to 4 Devices - With the 2.4GHz and Bluetooth 5.0 dual-mode connection, the Bloody multi-device Bluetooth keyboard can connect 4 devices simultaneously without delay, so you can connect it to your phone, PC or your tablet, and can switch freely between them in 1 second. Extreme Quiet Keyboard - Thanks to Bloody's patented innovative technology - QuietKey, this Bluetooth tablet keyboard can reduce noise from 35dB to 14dB, offering you a quiet and comfortable typing environment. You can work anywhere without disturbing anyone. Multi-System Compatibility & Sturdy Integrated Stand- This iPad Bluetooth keyboard can be compatible with Windows, Mac, iOS, and Android, and can easily change the layout from one OS to another. And the built-in integrated stand can hold your device with a suitable reading angle. Portable Design for Business Trip - With a compact space-saving size and ultra-lightweight design, this multi-device keyboard can easily fit into your backpack, all