Sony NWZ-WS613 Wireless Waterproof Sports Walkman MP3 Player Bluetooth Headsets

This one-piece music player's unique design is lightweight, ideal for sports and active lifestyles. It allows you to be wire-free, hands-free, and without distraction whether you're working out at the gym, playing outdoors or even swimming. Audio Modes : 5-band EQ/Clear Phase/Dynamic Normalizer Audio Power Output : 5 + 5mW Frequency Response : 20 to 20,000 Hz (when playing data file, single signal measurement). Play Mode : All Play / Shuffle / Playlist,Bluetooth Feature &Device Bluetooth Audio,Audio Codec : SBC, AAC, and aptX codecs