The BY-M1 Lavalier Mic Recorder is a small, lightweight tie-clip microphone that can be conveniently clipped to the tie or collar. The microphone can also be fixed under a jacket or shirt for easy concealment. The BY-M1 is an ideal accessory for Olympus digital voice recorders. The mic’s cord is 3.3-feet long and the entire unit weighs only 11 grams. A tie pin-type clip is also included with the microphone. Note: When using the ME-15 with BY-M1 Lavalier micro cassette recorders, you will need the Lavalier PA-1 plug adapter (sold separately).