Detailed Description  Specification: (1). Main rotor diameter:180mm (2). Overall length: 500mm (3). Overall width:500 (4). Drive system: 1225FE (5). Battery: 7.4V 800mAh (6). Receiver:4-in-1 (7). Transmitter:WK-2401 (8). Gyro:3D Gyro (9). All-up weight;210g(battery inluded) Features: 1). Quarto motors drive make unimaginable stable flight and bring you more fun 2). Flight time will be up to 8 to 12 minutes on a 7.4V 800mAh LiPo 3). Modularized design features convenient maintenance at low cost 4). Main rotor blades are specially protected by arc-like carbon fiber which effectively prohibits blades, people and property from damage Integrated design of 3D gyro and attitude control provides precise locating in air