The Shure DL4B/O is a DuraPlex Omnidirectional Waterproof Subminiature Microphoneare consistent, long-lasting, and resistant to dust, dirt, water, and sweat. Offering professional-quality audio for film, broadcast, speech, theater, and performance applications, DuraPlex is perfect for everyday situations but excels in the harshest environments. Capture every moment with confidence. Rain, or shine. Available in lavalier or headset form, DuraPlex has been extensively tested to ensure an IP57 dust-resistant, waterproof rating. Whether shooting reality TV, mounting a professional theatrical tour, or wherever audio takes you, contending with the elements won’t slow you down. As comfortable on the beach as it is in a broadcast studio, DuraPlex features a neutral, full sound quality that lives up to the highest audio standards.
Polar Pattern: Omnidirectional
Frequency Response: 20 Hz to 20 kHz
Sensitivity: -42.5 dBV at 1 kHz 
Maximum SPL: 132.0 dB SPL,1 kHz at 1% THD, typical
Dynamic Range: 101.0 dB typical
Microphone Current Draw: 220 µA, maximum
Cable Diameter: 1.6 mm
Cable Length: 66 in. (1.67 m)
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