H2O Audio Sonar 2 PRO Waterproof Bone Conduction Headphones for Swimming - Open-Ear Underwater IPX8 Waterproof Headphones - MP3 Player with Playlist+ App for Bluetooth Streaming - 10 Hour Battery Life

ADVANCED BONE CONDUCTION TECHNOLOGY - Delivers crystal-clear sound underwater using enhanced bone conduction speakers. Open-ear design provides full situational awareness while swimming with IPX8 waterproof rating up to 12ft depth. BUILT-IN 8GB MP3 PLAYER - Store up to 2,000 songs or 130 hours of music directly on device. Supports iTunes (.m4a) and MP3 formats. Simply drag & drop music from your computer for phone-free swimming sessions. STREAMLINED SWIM-OPTIMIZED DESIGN - 40% smaller and thinner than predecessor. Lightweight profile reduces drag, fits under swim caps, and includes removable goggle clip for secure attachment during laps. INTUITIVE WATERPROOF CONTROLS - Large, raised buttons designed for easy operation with wet hands or while wearing gloves. Simple navigation through playlists and volume control during intense swim workouts. BLUETOOTH 5.3 CONNECTIVITY - Pairs with smartphones, smartwatches, and computers. 30ft range on land, 4" underwater. Perfect for streaming when device is goggle-mounted. LONG-LASTING BATTERY PERFORMANCE - Up to 9 hours Bluetooth playtime or 6 hours in MP3 mode. Quick USB charging included. Extended battery life ensures uninterrupted music through your longest training sessions. PLAYLIST+ RECORDING FEATURE - Double-click to record and store Bluetooth audio directly to headphone memory. Create custom playlists from streaming services and save them for offline playback during workouts. H2O AUDIO PRO APP COMPATIBILITY - Free iOS/Android app for music management, software updates, folder creation, and playlist organization. Easy drag-and-drop interface for seamless music library management. COMPLETE SWIMMING PACKAGE - Includes SONAR 2 PRO headset, protective carrying case, USB charging cable, swim earplugs, and comprehensive user guide. Everything needed for immediate pool or open water use. PROFESSIONAL ATHLETE PERFORMANCE - Engineered for competitive swimmers and triathletes. Fail-safe sound delivery, hassle-free operation, and drag-reducing design built for serious aquatic training and racing.