KOSS M-21

electret microphone

• Unique electret microphone design provides flexible usage for hand-held or hands-free communication
• Ideal for voice activated and voice recognition software and computer games
• Unidirectional microphone for maximum sensitivity and optimized pick up pattern
• Microphone Impedance: 5000 oms
• Frequency Response: 100-16,000 Hz
• Includes (2) "AAA" batteries