4GB Sports Wearable MP3 Player, Waterproof: For use in salt & fresh water up to 2-meters (6.56 feet) deep, Sweat resistant, dust proof design endures through the toughest training conditions
designed for warable, ergononic, slim and light and stays in the place whatever your sport. builted ambient sounds modes will make you to missing a beat while you excercies.
Enjoy a 12-hour battery life. if you're stuck for time, 3-minute quick charge for 60 minutes of playback
Drag and drop all MP3s from iTunes, Windows Media Player or Internet Explorer and Multi-format playback(WMA, AAC-LC, or L-PCM) also lets you plays.

Made for the outdoors, the nw-ws623 sports Walkman is tough and durable. Perfect for all terrains, it's salt waterproof and dustproof, as well as slim and comfy to wear. With Bluetooth and NFC technology for wireless streaming, quick charge battery, and Bluetooth remote control, it's the ultimate sports companion.