H2O Audio TRI 2 Multi-Sport Waterproof Bone Conduction Headphones are a breakthrough in audio technology, offering enhanced sound quality and an improved ergonomic design. Engineered for endurance athletes, they deliver a superior listening experience, whether you’re training on land or in water. New SOUND Open Ear Experience : Our latest bone conduction speakers are slimmer (by 5mm vs. TRI headphones) and use enhanced speakers that provide an amazing sound in and out of water - with full situational awareness. Multi-Sport Design: Designed for swimming, biking, running, paddling, surfing, snowboarding. Your Sport - Your Music! 100% Waterproof: H2O Audio waterproof technology allows headphones to withstand submersion to 12'/3.6m underwater for an unlimited amount of time. Waterproof Rating: IPX8. MP3 Player: Built-in MP3 player with 8 GB of memory will hold several thousands of songs and accepts most music formats - including the iTunes .M4A. Bluetooth: Connect your iPhone, Android or any music enabled smart watch - and enjoy running & biking with streaming music. Note Bluetooth does not work underwater. To enjoy music underwater use MP3 mode. Battery Life: 6 to 9 hours of play time depending on usage. Battery life will vary based on mode and volume. Charging time ~2h. Charging time ~2h. Secure Fit: The neck band provides a secure and comfortable fit while swimming, paddling, running, and working out. Earplugs included for swimming use - to reduce any water noise in your ears. *Excluded From Discounts