This Bluetooth Keyboard allows you to connect multiple devices at the same time. You can also switch between the device in a second via the keyboard. No resync or no new connection required once it is set. This keyboard connects to Apple iOS, Android, and Windows systems via Bluetooth. You get a full keyset of the keyboard. This allows you to carry a single keyboard for anything you want to connect to type on like smartphones, tablets, and desktop computers. It uses a rechargeable battery giving you up to 12 hours of use in every single charge.