I've been having problems with the audio breaking up and dropping out on my WM 08 wireless audio module. At first I thought it was my earbuds, made for Android phones which have an extra connection on the 1/8" plug. I've also tried Sennheiser sports earphones and Bose noise cancelling travel headphones both with standard 1/8" plugs. All have the same issue. I keep the module in the back of my CamelBak and think the combination of the water inside and my body is enough to shield the signal