FREE installation with purchase! Bring in your helmet so we can install this headset for you! FITMENT: F71i71i91RPHA 31RPHA 71RPHA 91 The Sena Smart HJC 21B offers Bluetooth 5.1, 4-way intercom, HD sound, and 22 hours of battery life for seamless communication. SPECS Bluetooth Intercom Bluetooth 5.1 Universal Intercom Advance Noise Control™ Max 1.6KM Range HD Speaker Audio Multitasking 22 Hour Battery DESCRIPTION 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.
