Specification: colors vary sent at random ?Main rotor diameter: 340mm (13.5 inch) ?Length: 400mm (15.7 inch) ?Width: 72mm (2.8 inch) ?Height: 180mm (7 inch) ?Flying Weight: 240g (8.5 oz) ?Driven system: 2* 180 carbon brush motor ?Servo: 2x 7.5g digital micro servos (weight:7.5g;torque:1.0kg.CM;speed:0.1S/60? ?Battery: 7.4V 800mAh Li-polymer ?Control system: 4CH Multifunctional FM Transmitter and 4-in-1 Receiver ?Radio Control Range: 3300 feet (1000m) Package Include: ?Helicopter (100% Assembled) ?4 Channel 2.4 GHz Spread Spectrum Multifunctional R/C Transmitter w/ Training Switch and Simulator Port ?110V ~ 220V Universal Wall Battery Balance Charger w/ Alligator Clip for Outdoor Charging ?Esky 7.4V 800mAh Li-Polymer Rechargeable Battery ?8x AA Battery for Transmitter ?Extra Set of Main Blades(Upper & Lower)