Item No.:10089-12,r/c helicopter,Easy to pilot the helicopter in the air. Proportional control. Altitude and rotor speed control. Flight stabilizing system. Brake for easy landing. Scale operation characteristics ensure easier flying. Digital circuit design ensures stronger interference killing feature and prevents harmful interference. Operation protection device prevents plane crash in high altitude. Urgency braking function reduces loss due to misoperation. Automatic discharging function extends the service life of battery. charging time:4-6 hours,flying time:2-3 minutes,flying height:about 30 meters. Packing: Product size:68*50cm. Inner box size:50.3*33.6*20.3cm. PKG Mea.:69*52*64cm. 6PCS/CTN. G.W/N.W:13/11KGS.