Seller notes

Sena Expand Boom and 10R headsets for communication while on the track. The 10R system gets mounted in the helmet and the Expand Boom is worn by the person off the track. The pictures show the 10R installed in a helmet, which is not included. I will uninstall it when it sells. They work great. At most tracks I could communicate with the rider on the entire track. It looks and works as good as new. Its great for training, small reminders in form, telling your little guy a faster bike is coming up...

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