DPA 4466-OC-R-B00, Headset Microphone, Polar pattern: Omnidirectional, Diameter microphone capsule: 5.4 mm, Frequency response: 20 - 20000 Hz, +3 dB presence boost from 8000 - 20000 Hz, Sensitivity: 6 mV/Pa, -44 dB re, 1 V/Pa, Dynamic range: 111 dB, Max. SPL : 144 dB, One-size fits all head sizes and shapes, Adjustment mechanism for quick and 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: Black