The SMART HJC 21B is the 2nd 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-power system, the 21B offers Bluetooth 4-way intercom functionality with over 22 hours of talk time.
The enhanced sound provides users with an HD speaker to enrich mid-to low-pitched sounds.
Suits the following HJC Helmets:
- RPHA 71
- RPHA 71 Carbon
- RPHA 91
- RPHA 91 Carbon
- F71
- F71 Carbon
- F31
- i91
- i71
CONTROL UNIT
Powering On/Off, Call answering / Hang-up, Volume +/-, Radio Connect (FM)
MAIN UNIT
- Long-lasting Power (Up to 22 Hours)
- Battery Unit & PCB Unit
MIC SET
- Boom-Type: Applicable for Modular and JET helmets
- Wire Type: Applicable for Full-Face Helmets
21B FEATURES
- Bluetooth 5.1
- Advanced noise control
- Intercom 1600m / voice prompt
- Universal intercom / hd speaker
- Intercom( (1600m)
- Audio multitasking
- 4-way intercom
Ease of Install
Sound Clarity
Ease of Use
As I have only just received it and I only have set up Bluetooth with my phone for music. Happy with volume while riding my bike.
