UWaterG2  100% Waterproof Earphones are specifically manufactured for use with the UWaterG2 MP3 Player. The unique Twist & Lock jack not only completely seals water out, but also provides crucial long term protection against corrosion, a problem which might damage other unprotected devices with regular jacks. Two micro speakers (L,R) deliver high quality sound up to 10FT (3M) underwater. Soft, comfortable silicon eartips seal water out, keep sound in, and are specifically designed to stay in your ear canals.