Water resistant is not water proof. If you ride in a downpour it will stop working, but when it dries it's fine. I LOVE mine! Great for group rides and listening to my MP3 player. You have to yell over 70mph, but what do you expect?Marek88 said:I have the Chatter Box X2 and I believe its water proof but on the side note let me tell you that those things suck so if I were you I wouldnt waste your money. I'v had mine for over a year now and after the first month or two I stopped using it and now it just sits hooked up to my spare helmet.