Description: Number: E88 pro Frequency: 2.4G Channel: 4CH Motor: 816 coreless motor Quadrocopter battery: 3.7V 1800mAh lithium battery (included) Transmitter battery: 3 1.5 AA batteries (not included) Flight time: 15 minutes Charging time: 100 minutes Remote control distance: 100m Color: black, white Camera:  4K (single camera) The size of the quadrilateral: 25 * 20 * 5.5 CM (the arm is not folded,)， 12.5 * 8 * 5.5 CM (double arms folded) Add music zoom function, dual camera switch, add music zoom function, dual camera function