A:AnswerThe box claims 16 hours from a full charge. I haven't played that long, but I've played a few 4-ish hours sessions and still shown all bars on my PS4.
A:AnswerIt’s use is for a PS4. It works wirelessly when charged but can also plug into the controller and still have sound and use the microphone. They sound great both with games and movies.
A:AnswerIt did connect to my pc but I have not used it for Skype although I imagine it would be useable but only on the pc as it has a usb wireless signal generator, not true Bluetooth