HJC 21B Smart Intercom

Upgrade your ride with the SMART HJC 21B, designed exclusively for 21B‑compatible HJC helmets. Its integrated mounting interface makes installation quick and seamless, preserving your helmet’s sleek profile.

Powered by the latest Bluetooth® 5.1 low‑energy technology, the 21B delivers crystal‑clear 4‑way intercom connectivity and up to 22 hours of talk time on a single charge — perfect for all‑day adventures.

Smart HJC mobile app required (available free on app store/Google play)

Features

• Bluetooth 5.1 intercom up to 4 riders, universal connection with other brands
• Intercom range up to 1.6km (in ideal conditions)
• Audio multitasking with advanced noise control
• Voice Prompt
• HD Speakers
• Up to 22 hours of battery life

Helmet Compatibility

• RPHA 31
• RPHA 60
• RPHA 71
• RPHA 71 Carbon
• RPHA 91
• RPHA 91 Carbon
• F31
• F71
• F71 Carbon
• i71
• i91

The Smart HJC21B is equivalent to Sena model 10R.