Sony NWZ Series Accessory ONLY. Sony MP3 player not included. Compatible with: Sony NWZ-A726 / NWZ-A728 / NWZ-A729 / NWZ-A815 / NWZ-A816 / NWZ-A818 / NWZ-A828 / NWZ-A829 / NWZ-E436 / NWZ-E438 / NWZ-S615 / NWZ-S616 / NWZ-S618 / NWZ-S638 / NWZ-S716 / NWZ-S718 / NWZ-S736 / NWZ-S738.
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