R/C THREE CHANNELS HELICOPTERItem No.:1721285Colors: red,yellow and green Flight time: 6 to 8 minutes Product size: 20*4.4*9.8cm Packing: window box Quantity: 24 pieces Carton size: 60.5*42.5*66cm Net weight: 15.5kg Gross weight: 19kg function: go forward , backward , go left and right , crabbing; Remote control battery: 8*1.2V; the time of charge: 60 minutes; product battery: 7.4V900mAh; the time of flying: 10 minutes; flying distance: 50 square meter; the high of flying: 50 metres.Frequency: 35、40、72 HZ.