This pen hidden camera plus audio is a super small camera with a mini DVR to record all the action. It even writes like a normal pen. No drivers or outside power source needed. It will charge plugged into the wall and when it is plugged into the computer.Perfect camera for "body worn" application. Just click it like you would any ball point pen to start recording. Can record for a full two hours on a single charge.Recordings can be later downloaded via high speed USB 2.0 to your PC for viewing and storing.You can even use it as a thumb drive to move files from one computer to another. Will hold 2 to 3 hours recording.