12.4G Technology: 2.4G technology, FHSS 67 channels frequency-hopping spread spectrum, highly resistant to anti-jamming. 2Fast Response: The receiver response time is 2ms, ensuring a fast response and better control. 3Highly Sensitive: Smooth and highly sensitive to control inputs and stable at distances from 200-300m. 4Compatible with: Compatible with a variety of vehicles, suitable for RC cars, RC boats and RC tanks. 5Brake Function: With brake and fail safe, out of control protection function. Features: 1. 2.4G technology, FHSS 67 channels frequency-hopping spread spectrum, highly resistant to anti-jamming. 2. Receiver response time is 2ms, ensuring a fast response and better control. 3. Smooth and highly sensitive to control inputs and stable at distances from 200-300m. 4. Compatible with a variety of vehicles, suitable for RC cars, RC boats and RC tanks. 5. With brake and fail safe, out of control protection function. 6. Each of the 3 channels can be set respectively, supporting mixed control of 1 and 2 channels. 7. Voltage range of the transmitter. 4.8V-6V voltage warning: 8. Voltage range of the receiver. 3.3V-6V, working current 30mA, supports high voltage servos. Specification: Type A: Name: GA-4H-TX Channel Remote Control Set Product size: about 180*80*145mm/7.08*3.15*5.71inch Packing size: about 200*80*165mm/7.87*3.15*6.5inch Packing list: remote control + receiver + manual + color box blister packaging Packing method: color box Type B: Name: Separate Waterproof Receiver Product size: about 22*33*15mm/0.86*1.3*0.59inch Packing size: about 60*50*15mm/2.36*1.97*0.59inch Packing method: PE bag Packing List: 1*Waterproof Receiver