The V1-10610 from Otto Engineering is a standard in-ear induction receiver for use with flat pack or neck loop inductors. The advantage of these types of systems is that they remain discreet, due to the fact that no wires travel directly to the ear.
The V1-10471 is a flat pack inductor worn on the body for use with the V1-10610 earpiece. The V1-10471 connects to an audio source*, such as an MP3 or tape player, and then wirelessly transmits the audio to the earpiece.
The V1-10437 wired IFB earphone plugs directly into an audio source with a standard 1/8" (3.5mm) mini jack. This earphone is simplicity at the core. Plug into an audio source, insert the earpiece into your ear and you're up and running.
Note! *In order to connect the V1-10472 flat pack to an audio source, you must remove the audio cable from the V1-10437 wired earphone and connect it to the flat pack. This cable is easily interchanged between the flat pack and the wired earphone.