Model NW-S700F Walkman® player comes with 13.5 mm dia headphones with built-in microphone, and features clear bass technology that provides deep sound with no distortion. With battery life up to 50 hr, device supports ATRAC®, MP3, AAC (non-DRM), WMA (non-DRM), and Linear PCM music files. Built-in FM tuner offers access to radio stations and includes presets for most visited stations. Compact