Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Cardioid
Frequency Response: 100 - 13,000 Hz
Low Frequency Roll Off: 80 Hz, 18 dB/octave
Open Circuit Sensitivity Phantom: -51 dB (2.8 mV) re 1V at 1 Pa
Battery: -53 dB (2.2 mV) re 1V at 1 Pa
Maximum Input Sound Level Phantom: 132 dB SPL, 1 kHz at 1% T.H.D.
Battery: 121 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range Phantom: 96 dB, 1 kHz at Max SPL
Battery: 85 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio: 58 dB, 1 kHz at 1 Pa
Phantom Power Requirements: 11-52V DC, 2 mA typical
Battery Type: 1.5V AA/UM3
Battery Current/Life: 0.4 mA / 2000 hours typical (alkaline)
Switches: Off, on-flat, on-roll-off

Weight:
Microphone: 60 g (2.1 oz)
Power module: 139 g (4.9 oz)
Cable 4.6' (1.4 m) long (permanently attached to microphone), 0.11" (2.8 mm) diameter, 2-conductor shielded cable with TA3F-type connector
Dimensions Microphone: 20.4 mm (0.80") diameter
Power module: 84.0 mm (3.31") H x 63.0 mm (2.48") W x 22.0 mm (0.87") D
Headset: 120.0 mm (4.72") nominal at widest point, 80.5 mm (3.17") flexible boom
Output Connector Power module: Integral 3-pin XLRM-type

Accessories Included AT8531 power module; AT8439 clothing clip; AT8139L large windscreen; AT8139S small windscreen; battery