http://www.audioropa.com/en/products/induction-loop-systems/lpu-1-dir/

»LPU-1 DIR«: under-the-chin receiver (stethoset receiver) for inductive audio signals

The LPU-1 takes the signals transmitted by an induction loop system directly to the ears of people who do not wear hearing aids.

The ear buds of the featherweight, ergonomically designed under-the-chin receiver can swivel to stay comfortably fixed in the user’s ears even when he/she moves his or her head. The soft flexible material of the the ear buds also nestles gently into the auditory canal to effectively subdue ambient noise.

Specifications:

Sound frequency transmission range 70-5400 Hz
Distortion factor < 1%
Signal-to-noise ratio Typ. 60 dB
Maximum volume Approx. 120 dBA
Weight 55 g
LPU-1 DIR

Accessories

A-4276-0, a42760, 4276