Designed for theater, broadcast, musical performances and conferences, the EC81 MD reference lightweight cardioid ear-hook microphone is engineered for accurate, specific placement. Featuring a flexible ear-hook and adjustable boom length, it’s easy for the wearer to find the perfect fit without any help. When it comes to sound, its sensitive cardioid polar pattern picks up a wide range of frequencies - from bass to soprano - and provides flexibility in getting the best sound from the source. - Audio Frequency bandwidth: 400 Hz to 18 kHz - Sensitivity: 11 mV/Pa - Electrical Impedance: 1 kHz/5.000 Ohm - Length: 10 mm - Weight: 2 g - Colour: Cocoa.