Built-in gryro for more stable and controlled indoor flying. Cool LED lights effects. 3,5-channel controller for flying up/down, forwards/backwards, right/left and for turning the light effects on/off. Built-in rechargeable 3.7 V Li-polymer battery which is charged via the IR controller. Controller batteries: 6 x AA/LR6 (sold separately). Charging time: 1 hour, flying time: 5-8 minutes. Length: 220 mm. Age: 14+.