The Smart HJC 20B is a Bluetooth communication system, developed in collaboration with SENA specifically for HJC helmets. The Smart HJC 20B can be installed in various models of HJC helmets. Its compact size and aerodynamic design enhance the overall appearance and aerodynamics of the helmet. Based on SENA's best-selling model 20S, the 20B model offers an optimal Bluetooth environment with intuitive operation and easy installation. Enjoy the multifunctionality of the Smart HJC 20B: make calls, listen to music, follow GPS directions, and use the intercom features. Applicable for the following HJC helmets: RPHA11 Carbon, RPHA70 Carbon, RPHA90S Carbon, RPHA90S, F70, i90, V10, V90.