5 mm Threaded, Earpiece Connection Type Acoustic Tube, Earpiece Color Clear, Volume Control No, Includes Earphone, Kevlar Cable, Material Cycoloy Resin.Listen-Only Earpiece, Product Type Listen-Only Earpieces, Compatible Radio Manufacturer Model Number HT1000, Earpiece Style Earbud, Number of Ears One, Push To Talk No, Radio Connector Type 3.