Audio-Technica AT9921 Mini Mono Boundary Condenser Microphone Overview:

Mini mono boundary condenser mic for digital recording. Designed for use on portable recording devices, digital cameras and desktop computers.

Features:

• High-quality mono microphone for small digital recording devices
• Dual power supply plug-in power system with LR44 battery
• Available with PC 3-prong plug
• Newly developed rubber floating structure which reduces external vibration noise
• Metal screen produces excellent acoustic properties whilst reducing external noise

Specifications:

• Element: Mono Electret Condenser
• Polar Pattern: Omnidirectional / Unidirectional switchable
• Frequency Response: 100~15,000 Hz
• Sensitivity: -38 dB (12.6 mV) re 1V at 1 Pa
• Impedance: 2,000
• Power Supply: Battery / Plug in Power
• Battery Current / Life: About 300 hrs.
• Dimensions: Mic.: 24.5mm(H) x 55mm(W) x 61mm(D)
• Power module: 13.6mm(H) x 22.4mm(W) x 44.8mm(D)
• Weight Mic.: 46g
• Power module: 15g
• Cable Mic.: 1.6 m
• Power module: 0.2 m
• Accessories Furnished: Power module, LR44 battery