WLtoys V977 Power Star X1 6CH 2.4G Brushless RC Helicopter New Original Package Flybarless CP helicopter, aerodynamically designed to achieve unparalleled stability Battery 1S 3.7V 450mAh 25C Transmitter has 3D aka Idle-Up switch, Throttle Hold switch, large LCD, low voltage warning. Hovering midpoint setting allows setting of the hovering point. 3D Mode activates 3-axis gyro, enables aerobatics such as flips, rolls inverted flight, funnels and tick-tocks Transmitter can switch from Mode 1 to Mode 2, vise versa.