S2-C(2-man intercom) Riding motorcycle helmet headphones Multiple calls

Main features.
1.Cell phone answer calls, play MP3 music, GPS playback, with FM radio function
2. Using DSP echo cancellation and noise suppression technology, high speed to ensure clear voice quality.
3. With CVC8.0 call noise reduction function.
4. Support Bluetooth to connect 2 cell phones at the same time.
5. Support with any brand of other helmet bluetooth headset (such as SENA, cardo, Freedconn ...) Pairing and intercom
6. Bluetooth cell phone, intercom, stereo music automatic switching, support for Chinese and English switching.
7. Key panel waterproof and sunproof, durable design
8. Easy to install: the package provides the required clips and tools, you can easily install the motorcycle bluetooth headset on most helmets, switching the microphone according to the helmet, including full helmets, half helmets, open helmets, 3/4-face helmets, off-road helmets and retro helmets
9.Connect with intercom via K cable                                      

Specification.
Bluetooth version: Qualcomm 5.1
Intercom distance: 800 meters - 1000 meters 
Continuous talk: more than 22 hours 
Listening to music: 72 hours  
Standby time: 400 hours
Battery capacity: 800 mAh
Bluetooth intercom mode: 3 people in a row
Simultaneous intercom number: 2 people
Connection mode: serial connection
Charging time: about 2.5 hours  
Charging interface: TYPE-C Android universal plug 
Battery type: rechargeable polymer lithium battery 
Power requirements: 5V = 1A 


Packing list: 1 Bluetooth host
1 stereo headset
1 USB charging cable: 2 helmet clips (screw clip + velcro clip)
2 microphones (hard microphone and soft microphone)
1 user manual