A quadcopter does not use mechanical servos. Instead it uses 4 electronic speed controllers (ESC) and 3 gyroscope ICs.
The one you posted uses a small lightweight Li-Po battery that is 7.2V or 10.8V/2200mAh, not 12V and flies the quadcopter for 10 minutes to 15 minutes, not 1 hour.
Here is a review of the kit:
Gaui 330X S Quadcopter Review - RC Groups
Somebody makes another quadcopter that has a video camera in it. I couldn't find it today.
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Looking at RC Groups index there are hundreds of quadcopters available. Here is another good one:
Horizon Hobby: AR.Drone Quadricopter, Orange & Blue by PARROT, INC (PTAPF720002)
Horizon Hobby: Article: Parrot AR. Drone Review: John Redman (Parrot)