The Sony Walkman NW-S23 is a digital media player that allows its users to store up to 64 songs on the 256 MB built-in memory module. This media device offers a battery life up to 70 hours and features such as Waterproof. In addition, the model is available in white with the following characteristics: 1.9 inches width, 3.9 inches height, 0.78 inches depth, 2 Oz weight.