Yes this does and can be used as a webcam
Camera which can work whilst charging plugged to USB will sort it
Nothing will you still have to charge or change batteries...
How will it sort out constant recording? It will not :(
If their phones are anything to go by its a great buy. I currently have the Elephone S1 phone with fingerprint scanner it only cost me £50 last year. Thats after previously having the P6i which was another great phone. The technology you get from them for the money is streets ahead of any other company i know of. The equivalent price would buy you a slow clunky basic entry level phone on the highstreet.