Purchased mine from hermod. After 18 months got rain damage, spoke online with sena in states, they have very good email chat and I did all the tests with their instructions. They realised it was far hooked and offered to replace it but said it would be better to try the original seller. I didn't hold out much hope but emailed hermod and explained, they put one in post next day, even before I sent them the knacker back. Can't say fairer than that for customer service.