From the Manufacturer

Syma S107G 3.5 Channel RC Helicopter with Gyro in Green color scheme. 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. Battery Type: Lithium Polymer (LiPO Battery). C Rate: 15C. Volts: 3.7. Capacity: 150mAh. Cell Count: 1S. Continuous Discharge: 15C (2.25A). Watt Hours: 0.56. Motor Type: Brushed. Age Rating: 14 With Adult Supervision. Charger: USB. Radio: Infrared. Fuel Source: Electric. Length: 8.7 in (220.98mm). Height: 1.5 in (38.1mm). Width/Diameter: 3.9 in (99.06mm).