1.Support 4 people connection and talk at the same time, the talk distance can reach 1000 meters;

2.Fx4 Pro owned Qualcomm CSR Bluetooth 5.0 CSR chip, it will make the connection more faster, more stable, and more compatible between the intercoms;

3.40mm "high-power" " stereo" "high-definition" sound quality headphones, HIFI stereo sound quality;

4.Built-in independent high-definition FM radio chip, You can switch between European and Japanese frequency bands:
Japanese frequency band:76-91Mhz
International frenquency band:86-108Mhz;

5.The professional CVC chip built-in noise reduction technology and equipped with a professional noise reduction microphone to make the call sound quality clearer；

6.850 mAh battery, longer battery life;

7.Power reminder: There are three levels of power reminder: full power, medium power, low power;

8.Self-check power: double-click the multi-function button in standby mode, there will be power prompt;

9.Large silicone button with light, easy to operate during the riding;

10.Phone function:Redial the call (last number redial); automatic/manual answering of the call, rejecting the call, hanging up the call, voice dialing;

11.3.5mm Headphone jack, universal unilateral ear-hook special earphone for referee; (Pakcage not included).

12.Two kinds of installation methods (clip installation/3M glue stick Velcro);