Mp3 Stereo Headset Twin Earbud for Sony Ericsson W350i, Z750a, Z310i, W580, W200i, W300i, W810i, Z520, W800, W550i, K750, Z525 [Retail Packaging] Quality- Brand new high quality non OEM MP3 earbud hands-free headset. Ergonomic, dual bud compatible with MP3/iTunes listening pleasure! Quality- Brand new high quality earbud hands-free headset.