Born For Sports - Titanium and silicone materials ensure 35g lightweight, and the ergonomic design provides a comfortable and stable wearing experience. Powerful IP68 waterproof brings a 5-metre depth diving capacity, with 32GB music storage also makes it a perfect MP3 player while swimming, from land to underwater, Suunto Aqua are resistant to water, sweat and dust for all sports. Clear Voice Sound - Adopting the Enc (Environmental Noise Cancellation) technology, the built-in dual microphone is capable of capturing your voice and removing the ambient noise intelligently. Whether you are running or cycling, the Suunto Aqua headphone ensures the clear music sound and calls for you. 30H Playtime - With Suunto bone conduction headphones, you can immerse yourself with up to 10 hours of music.