A key machine, a key crane and an automatic crane function. 4 flight modes: Normal, automatic-balance, Auto- and turn modes. 3 TYPES OF WING: standard, - (flight wing) and V-tail. Remote sensitivity control. 3 working frequencies for servos: 50Hz, 125Hz and 250Hz. adjustment of the common sensitivity, self-stabilizing and of the crane. Rocker center, automatic calibration. Support (7.4 v) receiver and steering motor. Easy to use, extremely suitable for beginners Input voltage: 5-7.4 V Servo Travel: 1520 +/- 500us Gyroscope: +/- 2000 dps Accelerometer: +/- 4G Colour:as shown Material:PC+metal Package Contents: 1 x Stabilizer kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.