Charging via standard MicroUSB cable, red light to indicate charging, goes out when done.
Has special function keys to support Mac and Windows PC (Command key is Win key)
Has joypad and OK/Home button for Android and iOS devices.
Media volume control support varies by device and OS
Feels solid and has quality construction
Three different BT keys cater for pairing of one each of iOS, Android, and Windows PC (your PC/device will need to have BT included already)
To pair with the included 2.4GHz dongle:
Plug dongle in to device, press Mode button, light comes up on keyboard, and keyboard just works.
No password or searching for dongle is required - better than most competitors.
To pair with BT:
Press Mode button, press the green BT "Device type" key, light comes up on keyboard, search for keyboard in your device's BT app and connect it.
If your device offers a PIN code, type it on the keyboard to complete the process.