Syma S107G 3 Channel RC Helicopter with Gyro. Flight Control Includes Up/Down, Left/Right Turn, and Forward/Backward movements. Includes USB Charger, and Spare Tail Blade. For Use Indoors ONLY Due to Infrared Control. Volts: 3.7. Watt Hours: 0.56. Motor Type: Brushed. Age Rating: 14+ With Adult Supervision. Batteries: 15C 1S 150mAh 3.7V LiPO. Charger: USB. Radio: 3 Channel Infrared. Fuel Source: Electric. Length: 8.7 in (221mm). Height: 3.9 in (99.1mm). Width/Diameter: 7.5 in (190.5mm).