SMART HJC 21B is the second generation standard Bluetooth communication system model that supports 21B compatible HJC helmets, with structural interfaces that users can easily mount on HJC helmets.

Based on the BT 5.1 low-energy system, the 21B offers 4-way Bluetooth intercom functionality, with over 22 hours of talk time.
Enhanced audio provides users with an HD speaker, to enrich the mid-low sounds.

The second generation SMART HJC premium Bluetooth communication system models implement an all-in-one design, fully integrated into the helmet, allowing you to feel the optimal weight balance and aerodynamic performance while riding. SMART HJC 50B and 21B can be installed on RPHA 71, RPHA 91, RPHA 31, F31, i71 or i91. Developed in collaboration with SENA and made specifically for HJC helmets.

CONTROL UNIT
Power on/off, answer/hang up calls, volume +/-, radio connection (FM),

MAIN UNIT
Long-lasting power supply (up to 13 hours)
Battery unit and PCB unit

MIC SET
Boom-Type: Applicable to Modular & JET helmets.
Wire type: Applicable to full-face helmets.

Bluetooth 5.1
Advanced noise control
1600m intercom
Promote voice
Universal intercom
HD speakers
Multi tasking audio
4-way intercom.

The smartphone app allows you to quickly and easily control the various functions of the SMART HJC communication system and consult the Quick Guide.