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420T (+ Heart Rate Strap + Cadence)
With a simple twist to interact with the Ninja Master series cage
Size chart
Air Lite straps and innovative adjustment system
interfono hjc smart 20b Multiattrezzi 420T (+ Heart Rate StrapSMART HJC 20B is a Bluetooth communication system developed in collaboration with SENA specifically for HJC helmets. SMART HJC Bluetooth 20B can be installed on various HJC models and, thanks to the compact size and aerodynamic design of the Bluetooth unit, enhances the overall look and aerodynamic design of the helmet. Based on the 20S model, SENA's best selling 20B model provides an optimal Bluetooth system with intuitive operation and easy unit