Feature: 1. 2.4G technology, FHSS 67 channel frequency hopping spread spectrum, highly anti‑interference. 2. Receiver response time is 2ms to ensure quick response and better control performance. Smoothly and highly sensitive to control input, and stable over a range of 200 ~ 300m / 656.2 ~ 984.3ft. 3. Compatible with a variety of vehicles, suitable for remote control vehicles, remote control ships and remote control tanks. 4. With braking and failure safety, out of control protection function. Each of the 3 channels can be set separately to support mixed control of 1 and 2 channels. 5. Voltage range of transmitter, 4.8V‑6V voltage warning, Voltage range of receiver, 3.3V‑6V, working current 30mA, support high voltage servo. Specification: Item Type: Remote Control + Receiver Material: Plastic + Electronic components Size: Approx. 18 x 14 x 8cm / 7.1 x 5.5 x 3.1in (±1-2cm) Battery Model: 4pcs AAA battery (Not included) Suitable Age: 15 + years old Transmitter Specifications: Number of Channels: 4 Mode Type: Remote control car boat RF Power: Less than 20dBm Response Time: 10s-12ms Control Distance: About 200 ~ 300m / 656.2 ~ 984.3ft Low Pressure Warning: 4.5V Receiver specifications: Number of Channels: 4 Frequency: 2.4 GHz. Package List: 1 x Remote Control 1 x Receiver