The customer comes first! If you have any dissatisfaction with the product, we support full refund within 30 days! 815-16 Drone Foldable Altitude Hold Quadcopter Drones WIFI FPV Hight Hold Description: Item NO.: 815-16 Material: ABS plastic and electronic components Color: gradient Version: with 4K Camera Frequency: 2.4G Channel: 4CH Battery: 3.7V 450MAH Lipo Battery (Included) Transmitter Power: 3 x AAA Battery (Not Included) Transmitter Mode: Mode 2 (Left Hand Throttle) Flight Time: about 9mins Charging Time: 90 minutes RC Distance: 80m Resolution: 4K Camera Angle: Fixed at 25° Quadcopter Viflosae 815-16 Drone Foldable Altitude Hold Quadcopter Drones WIFI FPV Hight Hold Electronics Gadgets Deals of the Day Clearance Optical Positioning and Altitude Hold . CS11 is extremely user-friendly that comes with Positioning and Altitude Hold Foldable arms, small size, easy to carry. With altitude hold mode function, flight is stable. In headless mode, there is no need to adjust the position of the aircraft before flying.