Walkera Dragonfly 4G3 2.4GHz 6CH PPM Mini RC Helicopter RTF w/ Alloy Metal Rotor Head Ultra mini indoor 3D mode broke the concept of space limitation Super mini but super precision Small size helicopter but with full functions of big one The latest single-cell LiPo technology is CREATIVELY used in this size helicopter in the world. It features friendly environment and energy-saving concept Equipped with high performance motor, the flight time will be up to 7 to 8 minutes at 3.7V 400mAh LiPo battery pack, depending on your flight mode.