This is a brand new Workman DEG-03 replacement dynamic microphone element cartridge. Fits the Workman DM-507 Superstar series, Victory V507 series, and many other CB radio microphones. Measures 1-1/8" (face), 3/4" (base), 5/8" (height). Sensitivity: -70+/- 3dB (at 1KHz) Impedance: 500 ohm Frequency Response: 300~6KHz .
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