Main Features: modes: Automatic induction mode and transmitter control mode Transmitter controlling mode can allow the SJ881 flyer to hover Can be controlled by transmitter and hand sensor Cute outlook design Easy to operate ransmitter . This product : Automatic induction mode ,It can be easy to go up/ down/ hover Can be controlled by transmitter and hand sensor Easy to operate it by your hands !!! Specifications: Material: Non-toxic Plastic Styles: Random Sent ( Male or Female is sent randomly one for you,not both of them) Male : Net Weight: 38g; Gross Weight: 138g Female : Net Weight: 41g; Gross Weight: 139g Controller Size: about 5*3.5cm Package Size: about 20*19.2*5.5cm Charging Time: about 30 mins Flight Time: about 6-8 mins State of Assembly: Ready to go Battery of Flying : 3.7V 150mAh lithium battery Battery of Controller: CR3020 button battery Package Included: 1 x RC Helicopter 1 x Remote Control 1 x USB Cable