Introducing the Sony NW-WS413 4GB Waterproof Walkman Sports Swimming MP3 Player in black. This device is perfect for those who love to workout or swim and want to listen to their favorite tunes while doing so. It has a storage capacity of 4 GB, which can hold up to approximately 1000 songs. The battery life lasts up to 12 hours, making it great for long workouts.

The MP3 player is waterproof, which means that it can be used while swimming or doing any other water-based activities. It also has a variety of features, such as being able to play MP3 files and having a manufacturer warranty. Get ready to enjoy your workouts and swims with the Sony NW-WS413 4GB Waterproof Walkman Sports Swimming MP3 Player.