Feature: 4 Motors Drivingstable Flying Ability Guarantee Free Flight For All Flying Actions Module Designationeasy Install And Repair. 4 Axes Gyro And Posture Control Intergrated Designation Guarantee The Precise Positioning. Over 7 Minutes Flying Time Specification: Model No. U816 Materials: Abs Weight: 30g Size:9.6x9.6cm Main Wing Size:5.5 Cm Box Size:33.5x23.5x9cm Helicopter Battery: 3.7v 240mah Rechargeable Li-po Battery Charging Time: 60 Minutes Flight Duration: About 7-9 Minutes Transmitter Battery: 4 X Aa Batteries(not Include) Remote Distance: Up To 30m Package Contents: 1 X U816 Ufo (new Package) 1 X Transmitter 1 X Usb Charging Cable 2 X 3.7v 250mah Batteries 1 X Charger 2 X Propeller A 2 X Propeller B 1 X Instruction Manual