SpecificationBrand: DHDModel: D1Main Color: Green/Blue OptionalRemote Control: 2.4GHz Wireless Remote ControlChannel: 4-ChannelsAge: Above 14 years oldBuilt-in Gyro: YesQuadcopter Size: 43 * 43 * 21mm / 1.7 * 1.7 * 0.8inQuadcopter Weight: 7.9g / 0.27ozQuadcopter's battery (built-in): 3.7V/80mAhCharging time: about 25 minutesFlight time: about 3-4 minutesControl distance: about 15 MetersTransmitter battery: 2 * 1.5V AAA Battery (not included)Transmitter Mode: Mode 2 (left stick throttle)