Waterproof Underwater 4GB WMA MP3 Player Swimming Water. Color: red Capacity: 4GB Max. underwater depth: up to 5m Support MP3 / WMA USB 2.0 interface Waterproof rating: comply with International Standard IPX7 Support Win 2000,me,XP, Vista, Win 7, Mac OS 8.6+ and Linux 2.4.0+ Battery operating time: 8 hours Charging time: 1.5 hours Working temperature: 0C - 50C Working humidity: 20%-100% 1 X MP3 2 X Pair waterproof earpads 1 X Waterproof earphone 1 X Armband 1 X USB cable 1 X User guide