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SMART HJC 21B Bluetooth Communication System (2nd Generation)
The SMART HJC 21B is a second-generation standard Bluetooth communication system designed specifically for compatible HJC helmets. Featuring a user-friendly mounting structure, it integrates seamlessly into the helmet for a clean, aerodynamic fit. Powered by a low-energy Bluetooth 5.1 system, the 21B supports 4-way intercom communication and delivers over 22 hours of talk time.
Enhanced audio performance comes from upgraded HD speakers, providing richer and clearer mid- to low-frequency sound for a more immersive riding experience.
RPHA 2nd Generation Series: RPHA 31, RPHA 71 & Carbon, RPHA 91 & Carbon, RPHA 60
Full Face Helmets: F71 & Carbon, F31, i71, i91
Control Unit
Power on/off
Call answer/end
Volume control (+/-)
FM radio connection
Main Unit
Up to 13 hours of battery life
Includes battery unit and PCB
Microphone Options
Boom Type: For modular and jet helmets
Wired Type: For full-face helmets
Bluetooth 5.1 for faster, more stable, and energy-efficient connectivity
Advanced noise control for clearer communication
Intercom range up to 1.6 km
Voice prompts for easy operation
Universal intercom compatibility
High-quality HD speakers
Audio multitasking capability
4-way intercom communication
Control and customize your SMART HJC 21B system effortlessly via the mobile app, and access the Quick Start Guide anytime.
All SMART HJC products include a 1-year warranty from the date of purchase. This does not cover damage caused by misuse, negligence, modifications, or accidents.
30-Day Return Window
You may return most new, unopened items within 30 days of delivery for a full refund.
Shipping Costs for Returns
If the return is due to our error (such as receiving an incorrect or defective item), we will cover the return shipping costs.
Refund Timeline
You can generally expect a refund within four weeks of sending your package back. This estimate includes:
How to Return an Item
Worldwide Shipping
We can ship to practically any address in the world. However, please note that some products have shipping restrictions and may not be available for international shipment.
Shipping & Delivery Estimates
When you place an order, we will estimate the shipping and delivery dates based on:
Depending on the shipping provider, these estimates may appear on the shipping quotes page.
Weight-Based Rates
Many items have weight-based shipping rates. The weight is found on each product’s detail page, and shipping companies round up to the next full pound when calculating costs.
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