This 18 in. Williams Sound neck loop plugs into a receiver with a 3.5 mm. stereo jack such as the Pocke talker 2.0. The neck loop delivers sounds from the receiver via a magnetic signal to your t-coil equipped hearing aid. It is worn like a lanyard.Features. Integrated safety breakaway device.. 18 in. Cord.. 3.5 mm. stereo plug.. Monaural.