my bro in UK has bose sport orientated wireless earphones, he has an issue where the rubber seal shrunk and expose part of inside after using it for 28 months, i advise ( IOriginal Post Deleted
actually wrote for him) to contact bose by email and explain the problem, he recieved a response 4 days later saying there will honour the warranty even though expired 4 months before and asked him to send his earphones and he received a bfand new sealed on 2 weeks later.