Selling the remote I bought to use with my Schuberth (SENA) built in intercom on my C4 Pro (SC1) but works with most Sena Intercoms. It fits on the handlebars and allows you to control the intercom without pressing the helmet buttons and gives more control over other functions. Compatibility. Compatible Models: 50S, 50R, 5S, 30K, 20S, 20S EVO, 10U, 10C, 10C Pro, 10C EVO, 10R and 10S. Almost new I only tried it a couple of times and I found I didn't really end up using it as I figured out the correct presses fairly quickly . All working but the cardboard box has a small tear and the original instructions in english are missing somewhere, but I've printed off a new set. Supplied with 2 brand new spare batteries as well. £55 posted (£70 new, or £90 if you bought the identical Schuberth version) https://www.sena.com/product/rc4/faq https://www.helmetcity.co.uk/schuberth-sc1-handlebar-remote-c4-r2-sc10u/