Used Invisio X50 TEA Dual COMMS Kit in-ear headset for buyers looking for a communication and hearing protection setup. This listing identifies the model as the X50 with a dual COMMS kit and in-ear design, which may suit users searching for a compact headset format rather than an over-ear unit. Free shipping is included, which can help with total purchase cost. Because the item is listed as used, review the photos and description carefully to understand cosmetic wear, included components, and overall condition before buying. This can be a practical option for shoppers specifically seeking this model or replacing part of an existing setup. Check the listing for full details. Invisio X50 TEA Dual COMMS Kit In-Ear X5 Dual Digital Hearing Protection Headset. Condition: Used. Listed at 235.00 USD. I honestly don't think these have ever been used, but I listed as used due to some minor scuffing and the fact that I just don't know their history.I honestly don't think these have ever been used, but I listed as used due to some minor scuffing and the fact that I just don't know their history.