Specifications: Rotor Diameter: 256mm Body Length: 239mm Height: 93mm Flying Weight: 99g Flight Time: Approximately 12 minutes Charging Time: Approximately 60 minutes Remote Control Mode: 2.4G remote controller Remote Control Range: 80-100 meters Battery: 7.4V battery for the helicopter (included), 4*1.5AA batteries for the transmitter (not included) Main Motor and Tail Motor: brushed motor There are two COLORS Available for selection.  Functions: Flybarless Design - Utilizing aerodynamic principles, the rotor provides strong power and enhances the aircrafts self-stability. The simple 4-channel design, combined with a 6-axis gyroscope, ensures ultra-stable flight. Optical Flow Positioning & Altitude Hold - Equipped with an optical flow sensor and a barometer for stable flight. Modular