Practice in transport: simple with its box for storing the keyboard
Ergonomics and extraordinary design: the keys are nikels, respond well to our actions.
The small problem is the number of batteries that must be put into it: 4 AAA batteries => not cool at charging for heavy use this keyboard, it takes barely a day.
The Bluetooth function is not at the top of hope. She walks every second. Unwanted disconnections which impede navigation a little bit and be very annoying.
It is small and convenient. Not very heavy.