Features:4-axis structure makes the quadcopter more flexible and rapid when flying.Built-in 6-axis gyroscope for precise hovering in the sky.Simple modular design makes changing parts easy with quality， durable and lightweight material.Increase/ decrease/forward /backward/ left/right and the proportional operation such as fly common functions.Special flying functions (continuous rolling)， rolling 360o.Can be flown both indoor and outdoor.Low voltage protectionItem specifics:Type: RC Quadcopter Model: YI ZHAN X4Color: Black+WhiteMaterial: ABSRemote control frequency: 2.4GHzRemote Control:YesGyro: 6 axisPower Source: Rechargeable Li-BatteryBattery of Quadcopter: Rechargeable Lipo BatteryBattery of Remote Control: Rechargeable Lipo BatteryVoltage:3.7V Size: 13.5*14.5*3.5CMFunction��oup/down，left /right， forward/backward， side fly left/right， 360 degree rotating， 360 degree rolling， and special functions(continuous rolling) Package include:1 x RC Quadcopter1 x Remote controller1 x USB Charging Line4 x Propeller Blades 1 x Li-Battery1 x Screwdriver1 x User Manual