High-gain antennas and a common antenna, increasing your distance.
Non-standard analog tone
Increase communication privacy.
Really restore the sender's voice clarity and dynamic range, but does not affect the frequency bandwidth. To prevent interference between channels, significantly improve the signal noise ratio of received audio signal.
Enhanced 3000mAh battery, up to 260 hours long standby time.
Optional high and low power, Farther signal radiation , Longer communication distance.