Music Waterproof MP3 Player for Swimming, Bone Conduction Underwater Headphones for Pool, Open Water & Triathlon Training, Wireless, Clear Sound, Open-Ear Player with Bluetooth (Sunny)

LISTEN UNDERWATER: A fully waterproof bone conduction MP3 player crafted for swimmers, triathletes, and open-water training. NO EARBUDS, NO LIMITS: Bone conduction technology provides clear, balanced audio through your cheekbones. Ideal for pool or ocean swimming. EASY TO USE: Simple one-button control and quick file upload from any computer. 16GB built-in memory holds up to 2,5003,000 songs (MP3, MP2, MP4, FLAC, M4A, AAC). BATTERY: Delivers up to 4 hours of continuous underwater playback per charge. Offers up to 10 days of standby time when not actively used. Provides up to 8 hours of total mixed-use for land and swim sessions. Bluetooth mode functions on land for training. WATERPROOF & COMFORTABLE FIT: 5 ATM waterproof bone conduction MP3 player, secure for swimming and training in pool or open water. Sleek 35 g design fits snugly and comfortably on your head without earbuds. BEFORE USE: Charge the device fully before initial use without unplugging it. Recharges in approximately 1.5 hours via magnetic USB cable. If unused for an extended period, recharge to preserve battery condition