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Select options This product has multiple variants. The options may be chosen on the product pageZeronoise, the electronics division of Racing Force Group, offers the most advanced communication systems for rally, circuit and kart racing. For rallying and off-road competition, Zeronoise devices, perfectly integrated with our helmets, provide the best sound quality during the interaction between driver and co-driver, being able to deal with any car, surface and user preference. The synergy between Bell Racing and Zeronoise’s research and development departments has brought to market the revolutionary Wired-Wireless technology, for no-cable communication inside and outside the car.