About this item 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 capaticy, 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. Open-ear Bone Conduction Tech - Suunto Aqua open-ear swimming headset uses bone conduction technology to transmit sound waves, keeping your ear canals open to listen to audio and hear the surroundings to reduce the risk of accidents effectively. And compared to traditional in-ear or over-ear headphones, the open-ear headphones won't damage your eardrums or hearing with prolonged use.