Highlights 3.5-channel full scale remote control. Omni-directional flight. Built-in electronic gyroscope. Simple to operate.     General Spec Model LS-109 Type remote control Channel 3.5-channel Material metal alloy Gyro support   Function support forward, backward, ascending, descending, convolution function. Compatibility It’s suitable to fly indoor. Battery for Helicopter built-in 3.7V Li-poly rechargeable battery Battery for Radio Control 6 × 1.5V AA battery (not included) Others a set of accessories, random shipment