The item for sale is a Brand New

Otto V1-10335 Accessory Adapter

This adapter is required to use with 3.5mm threaded Otto accessories such as ClearTalk headsets. Compatible with Motorola radios HT1000, JT1000, MT2000, MTS2000, MTX838, MTX900, MTX8000, MTX9000, XTS2500, XTS3000, XTS5000.