We are now launching project on R/ C Helicopter, and the following details might be for the specifications, you are welcome to send us all your details or similiar ones:  Main rotor diameter: 5. 25 inches (130mm)  Length: 6. 5 inches (170mm) , excluding rotors Rear rotor diameter: 1. 25 inches (30mm)  Helicopter weight: around 10g, including lithium-polymer battery Flying duration: 5 to 7 minutes Charging time: 20-30 minutes for full charge Range: up to 100 feet (30 meters)  The helicopter is equipped with rechargeable high-capacity lithium-polymer battery, with LED indicator and auto shut-off. Easy to use, simply plug in and charge the helicopter by the transmitter.