Wow...huge bulk, surplus lot of 30+ total pieces of Sennheiser professional audio equipment.  7 total complete mic / transmitter / diversity receiver units are included.  5 are lav mic systems, 2 are handheld units.  Here's a breakdown of everything:2 EW100 body wireless transmitters3 EW300 body wireless transmitters5 Lav mics, clip on2 EW300 handheld mics2 Diversity Receiver EW100 / EM100 receiver units (marked with 1/4 output)5 Diversity Receiver EW300 / EM300 receiver units (freq range 630-662MHz)14 original, removable receiver antennas7 Sennheiser power cords 2 Cables for mics2 Mic stand mic holdersThese units are in good condition with normal use marks consistent with age.  They came from surplus stock of an A/V rental company.  Company assures they were all in fine working condition, just surplus stock.  Just selling to get my money back, this is already what I paid for them.  I have tested each piece and ensured all power up.  Receiver units all power up; wireless transmitters all work though most have low batteries.  One receiver powered up but did not have backlight.  Not sure if this is a setting but am including it.  One handheld mic is missing the bottom cap cover - see photos.  Every single item is pictured!Selling ALL of these in one lot.  Great for bulk buyers, rental companies, hotels, schools, churches, anyone needing some used high end audio equipment.  PLEASE see all photos, enlarge, and fully inspect.  Sold as they are, seller guarantees all descriptions and photos.  I do not accept returns.  Feel free to ask any questions prior to purchase and I will try and answer.  Shipping is high due to the overall weight and packing size.