Yi Zhan Yizhan i7s WIFI FPV With 720P Camera & 1080P HD Camera Version RC Hexacopter RTF. Yizhan i7s Description: Item name: YiZhan Nano Hexacopter Frequency: 2.4G Gyro: 6 axis Product weight: about 290g Product battery: 7.4V 850mAh(Included) Remote battery: 3 x AA dry battery(Not included) Charging time: 100 mins Flying time: 7 mins R/C […]