Walkera Runner 250 PRO GPS Racer Drone RC Quadcopter 1080P HD Camera OSD DEVO 7 Transmtter FPV Racing-FPV 2 Version Type: Airplanes & Jets Color: Black Material: metal Terrain: Air Gender: Unisex Age: Adult Features: Using the new self-developed MR Drone flight control system, precise flight attitude, flight stability improved. Using new GPS-GLONASS dual mode satellite positioning system. GPS hovering precision ascension, star search speed. Buzzer design. When the flight signal is lost or dropped suddenly, the buzzer will sound automatically. Intelligent direction warning lamp design