This set is new being an unwanted gift. I did look at connecting it to a helmet but decided it was not right for me and so someone else can benifit. This is a proper multi set which has been pared in the factory but can be used by rider and passenger or by two seperate riders. Got a mate you have have two seperate units as they come with two chargers, etc. These cost me $575 but I will take $525 (+shipping if needed). Location is near Blacktown. If interested email me email@example.com or PM me.