In-line adapter jack 3.5mm.  Converts the audio out socket  of a TC4 headset to work in both ears.
 

Sensorcom Beige Covert wireless earpiece induction neck loop.
1200mm lead with 3.5mm Jack (2pole "mono") plug.
Torroid coil for higher efficiency for greater output compared to a standard neck loop.
For use with our Tet…