DPA 4466-OC-R-F00, Headset Microphone, Polar pattern: omnidirectional, Diameter microphone capsule: 5.4 mm, Frequency response: 20 - 20,000 Hz, Presence boost +3 dB from 8,000 - 20,000 Hz, Sensitivity: 6 mV/Pa, -44 dB re, 1 V/Pa, Dynamic range: 111 dB, Max. sound pressure level: 144 dB, One-size fits all head sizes and shapes, Adjustment mechanism for a quick and an easy size adjustment, IP58 certified, Connection: B+K Micro-Dot plug (suitable adapters for almost all transmitters available separately), Cable length: 1.3 metres, Weight: 12 g, Colour: Beige