Megafeis E350 16GB Waterproof Bluetooth Wearable Wireless MP3 Player (Blue) for Swimming 100% water-resistant. Designed for swimming and other sport activities; strictly built with international IPX-8 certification. IPX-8 waterproof rating for use in 2 meters water depth, built-in rechargeable Li-polymer battery for up to 7 hours playing time. Compact convenient and beautiful design with 16GB of internal storage. The E350 may be compact in size but can store hours of music thanks to the internal 16 GB memory. Bluetooth function for safety use, connect with your phone, take hands-free calls on the move or while driving a car. Wireless music streaming, connections to fitness apps (Nike+. etc) Wearable and Wire-free. This one-piece music player's unique design is lightweight, ideal for swimming and active lifestyles, this unique digital music player is designed to comfortably wrap-around the back of the head and securely stay in place, so you can swim, run, jump, and train harder. Be wire-free, hands-free, and without distraction whether you're working out at the gym, playing outdoors or even swimming. High Quality Sound. Exclusive Clear Audio Technologies like Clear Stereo and Clear Bass deliver deeper, richer sound quality.