[ONE CLICK PAIRING & GROUP INTERCOM & MICROPHONE MUTE] M1-S PLUS can achieve group intercom with 8 riders, but when you only connect ≤4 units, you can use One-click pairing. Even if the call is interrupted due to the distance from the other party, you can still continue the call as long as you return to the call range in a short time. If you don't want people to hear you when you're talking, M1S PLUS has a microphone mute function, which can better take care of your privacy! | [TWO M1-S PLUS MUSIC SHARING] Do you want to listen to the same song with your motorcycle companion? Based on feedback from many motorcycle enthusiasts, we learned that you may have this need. FODSPORTS is a professional company dedicated to R&D motorcycle Bluetooth intercom for users, our engineers spent a year and now successfully launched this function in 2020! It can achieve listen to a song at the same time between two M1S PLUS units! What a wonderful thing this is! Why don't you try it? | [FM RADIO & NOISE CANCELLATION& GREAT SOUND QUALITY & STRONG BATTERY LIFE] M1-S PLUS Bluetooth helmet speakers has FM functions. And the built-in CSR noise reduction chip can reduce wind noise and engine noise. With 40mm speakers, M1-S PLUS motorcycle helmet communication has more than most intercom' sound quality and super loud volume. With 900mAh battery, only 3h of charging time can achieve up to 20 hours of continuous working time, perfect for long-distance travel. | [SMART REMINDER & HANDSFREE & WATERPROOF] M1-S PLUS motorcycle helmet Bluetooth easy to set the device according to sound remind, It has battery detection and low battery reminder functions, you can know its battery status at any time. With access to Siri and S Voice commands, you can make or receive hands-free calls, listen to music and GPS voice guidance. You can ride in any weather because M1-S PLUS is waterproof and even work for temperature -3°F. | [UNIVERSAL PAIRING & 2 CHOICES MIC FOR DIFFERENT HELMET & EASY TO INSTALL] M1-S PLUS motorcycle communication systems is compatible with most of the Bluetooth headsets or earpiece in the market. It has 2 microphones - allows you to choose between a boom microphone for open face or flip-face (convertible) helmets, button microphone for full face helmets. The M1-S PLUS is equipped with a detachable, easy-to-install metal clip. And it can be removed and mounted to another helmet at any time.