About DJI Remote Controller Spark's remote controller features a brand new Wi-Fi signal transmission system, capable of controlling the aircraft and gimbal camera at a maximum transmission range of 1.2 mile (2 km). The remote controller can connect to a mobile device wirelessly and display a live video feed via DJI GO 4. Its folding clamps allow you to attach your mobile device securely. Maximum remote controller battery life is approximately 2.5 hours. DJI Remote Controller Features - Video transmission range of up to 1.2 mile (2 km) - Max speed of up to 31 mph (50 kph) in Sport mode What's in the box: - DJI Part 4 Remote Controller - DJI 12 Month Warranty