Very little to say. It is an Olympus product. An earpiece microphone that for me works absolutely perfectly when recording telephone conversations with my Olympus recorder.The quality is excellent, and works perfectly when used with either a mobile or a landline telephone. The cable looks a little delicate in build but is very discrete when being used. A second, spare TP8 may prove to be a useful addition. 10/10 for performance and overall build quality.