Vintage Electro-Voice, Model 205STC Noise-Canceling, Single Button Differential, Carbon Microphone. Articulation is 97% under quite conditions, and 88% under 115 dbs of ambient noise.

A flat response is provided over the entire speech range of 100 to 4,000 cps for best intelligibility.

The Commercially Bonded Model 205KK is Blast Proof, Waterproof, and Shock Resistant, and is ideal for Adverse Physical Conditions

These are UNTESTED

Package weighs ? kg and is ? cm x ? cm x ? cm  click for rate

Price $20.00 USD FOR BOTH plus shipping