Features: Mini size 0.98*0.51*0.5inchs, light weight 3g, can be used it for 1:28 and 1:64 RC mini cars. With pseudo random FHSS algorithm, which makes R4FGM with excellent anti-interference ability, control range up to 1300 feet (400 meters) on the ground. Built-in gyro can keep the vehicle in a straight line, and Gyro sensitivity can be adjusted by transmitter, which fits for drifting and on-road cars. Stable remote-control distance is up to 400m on the ground. Control with camera and display screen/goggle makes the FPV fun and cool. Even the polarities are mistakenly connected, receiver not damaged. The power of 4.6~10V supports high voltage servo. No need any setting on controller when R4FGM bind with radio, press 1 second to bind. Shot press 3 times within 1 second to on/off Gyro mode. Specifications: Channel: 4 Gyro Inside: Yes Signal Output: PWM, 2.4GHz Control Distance: More than 400 meters Model Application: RC Car/Boat Frequency: 2.4GHz ISM Spread Spectrum: FHSS Channel Resolution: 4096 Voltage Range: 3~6V DC Operating Current: 30mA (base on Power Voltage) Antenna Length: 210mm RF Power: