Features: 2.4G Technology: 2.4G technology, FHSS frequency hopping spread spectrum, excellent anti-interference ability. Highly Sensitive: Smooth and highly sensitive to control inputs and stable at distances from about 250m. Designed with ergonomic grip and foam hand wheel, easy to operate. Equipped with a hook, can be used with mobile phone. With built-in light control system, easy to control flash light, head light, parking light, backup light, right cornering light, left cornering light and winch. Compatible with a variety of vehicles, suitable for RC cars, boats, tanks, and robots. Specifications of Transmitter: Channels: 7 Item Name: RC Transmitter and Receiver RF Power: <20dBm Modulation: GFSK Control Distance: about 250m Voltage Input: 1.5AA*4 battery (Not Included) Specifications of Receiver: Channels: 7 Frequency: 2.4GHz Package Contents: 1 * Transmitter 1 * Receiver 1 * Lanyard