Specification: Brand: RC ERA Item: C138 Product size: Rotor diameter:306mm Body length: 312mm Height:101mm Weight:95g Radio Frequency Band: 2.4GHz Remote control distance (m): 80-100 meters Battery:Body:7.4V ,Remote control:4*1.5AA(Not included) Charging time: about 50 minutes Use time: about 12 minutes Function Description: 1 Flybarless design, using aerodynamic principles to design propellers to provide strong power and self-stability. Using 6-axis gyroscope for super stable flight. 2 6-channel design, 3 digital servos, adding 3D roll, more fun. 3 Barometer to set altitude, stable flight. 4 Modular battery, intelligent power management system, power indicator, easy and quick installation, effective battery protection, longer service life. 5 Ascend, descend, advance, retreat, fly left, fly right, rotate left, rotate right, route flight, wash pot and other stunts. 6 6G mode, using 6-axis gyroscope, stable flight, especially suitable for beginners. 7 Low voltage alarm, stall protection, out of control protection, large and small rudder conversion, one-key takeoff, one-key landing and other functions. 8 Equipped with a dedicated USB charger, fast and stable charging. Package included: 1 x C138 RC Helicopter 1 x Transmitter 1 x USB Cable 1 x BatteryïOE?2 or 3 OptionalïOE? 2 x Main Propeller 1 x Tail Propeller 1 x Instruction 1 x Screwdriver 1 x Hex wrench