Tie Clip Microphone (ME-11) The ME-11 is a small lightweight tie-clip microphone that can be clipped to the tie or the collar or under a jacket or shirt for concealment. The ME-11 is an ideal accessory for Olympus digital voice recorders. When using with Olympus Pearlcorder Microcassette recorders please purchase the PA-1 plug adapter. Type: Electret condenser microphone Directionality: Non-directional Frequency response: 100 - 12 000Hz Sensitivity: -42dB at 1kHz (0dB = 1V/Pa) Output impedance: 2.2kOhm Power supply: Plug-in-power system (1.5V . 10V) Cord length: 1m (3.3ft) Output Plug Type: 3.5mm Monaural mini-plug External dimensions: 8.8 x 34.3mm Weight: Approx. 11g Included: Tiepin-type clip