... *10*30 cm3.5 channel RC helicopter with gyro,with speed controller & light switch Product size:72*10*30 cmColor box ... 14/16KGFunction:Increase/decrease, forward/back, turn left/right,with speed controller & light switch,with gyroHelicopter battery:7.4V 1500mAh LI-battery ... (included)Remote controller battery:4PCS 1.5V AA battery (no included)Charging ...