GPS watch designed for the Hubsan X4 H501S, H501A, H502S, H502E, or H109S RC Quadcopter. All Hubsan GPS drones can be controlled by your watch. They support features such as automatic take-off, follow me, orbiting, GPS positioning, auto-return home, photo, video and more. The devices can be operated at a distance of 50 m. They are equipped with a 3.7V 200mAh Li-Po battery with charging time of 40 minutes and 120 minutes of operation. Dimensions: 59 x 46 x 23 mm