The HSP-49 features an adjustable length boom and a distinctive flexible ear-hook made with a self-adjusting soft spring polymer that eliminates the frustration of getting a secure and comfortable fit regardless of who is using it! This comfortable single ear headworn mic is a perfect solution for Houses of Worship, Theaters, Lecturers, Broadcast, Corporate A/V, and other applications where intelligible sound and low visibility are required. Element Premium back electret condenser, 3.0mm diameter Polar Pattern Omni-directional Frequency Response 20Hz-20KHz Sensitivity -35±3dB 1V/Pa @ 1KHz Output Impedance 2000 Ohms±30% SPL max 140dB (155dB with optional Red Dot adapter) Operating Voltage 0.8V-5V D.C Cable Kevlar coated; 1.2m (47.25”) Capsule Diameter 3.0mm Color Black, Cocoa Brown or Beige Wireless Body Pack Adapter Included adapter: T5 Mipro Optional adapters: T1 & T1RD AudioTechnica, T2 & T2RD AKG, T3 Sennheiser, T4 & T4RD Shure, T5RD Mipro, T8 and T8RD Electro Voice, T9 Sony, T14 Lemo and T15 Lectrosonics XLR Adapter Optional adapter : MJ-53 for wired use Accessories Spare audio cable and windscreens Weight (microphone, 1 cable and 1 T5 connector) 12.39g (0.437 ounces)