The new Interphone F4 integrates and improves on all the features which have made Interphone a leading product in the motorcycle and bike-to-bike communication market. Our riders use these and they work great! The headset is firm and will not easily fell off your helmet. If you have more than one, conversing with family can make your expedition safe and fun. Hands down, this is one the best headsets available on the market today. 5 Stars out of 5. read more...