RC Airship Long Endurance Drone 
1 cubic meter Vol.
1hr 30 mins flight on one 5.2 Amp LiPo Battery
Battery 12.6V at start 11.2V end 
Downlink Camera only no Gimbal. - ( Gimbal and action cam next flight test)

We've been developing this RC airship over the past two years. Features include 1 hr Endurance, 3-5 amp battery, 400g payload, camera gimbal, FPV, Low vibration, crash survivable, Helium recovery
and storage after each day of use.

Some videos:

Welcome to the LED - Long Endurance Dronehttps://www.youtube.com/watch?v=iMPtHGWouNQ
Brushless gimbal - https://www.youtube.com/watch?v=8sqCBWNohug
Servo gimbal and MFD controller - https://www.youtube.com/watch?v=z3glE5syuCI
Over snow - https://www.youtube.com/watch?v=joLNCG17uPU