Andrea NC-181M Monaural Mobile Headset

• Microphone/Speaker Plug 3.5 mm 
• Noise Cancellation - 5 dB/octave
• Frequency Range - 100-10,000 Hz
• Electrical Signal-to-Noise Ratio - > 60 dB
• Sensitivity at 1kHz (0 dB=1V/Pa) - -44 dB
• Current Consumption - < 0.5 mA
• Frequency Range - 50-20,000 Hz
• Coil Resistance - 32 ohm
• Sound Output from 1kHz 1mW Input (0 dB=20 µPa) - 114 dB
• Maximum Input Power - 40 mW

Andrea Communications NC-181VM Mono Headset offers unparalleled speech and sound clarity with the convenience of in-line volume and mute controls. The exclusive noise-cancelling microphone, with a windsock that minimises breath popping, has been awarded the coveted "6 Dragon" rating for speech accuracy by Nuance.

• Proprietary noise-cancelling microphone with windsock to minimise breath popping.
• Pro-flex wire microphone boom for perfect placement.
• 40mm mono (monaural) speaker with deep bass sound delivers crystal clear audio.
• Convenient in-line volume and mute controls.
• Comfortable foam ear cushion.
• Reversible for left or right side usage.
• Stainless steel adjustable headband folds flat for storage.
• Extra long 8-foot shielded cable with single 4 pin 3.5mm black plug suitable for tablets including iPad®, laptops including MacBook®, and most smartphones including iPhone®.

Compatibility:

• Windows 8, Windows 8.1, and Windows 10
• Apple: Mac OS X 10.5 and higher.