Supervoice SVC-121 is a professional HD mono headset with advanced uni-directional noise cancelling microphone and quick-disconnect (QD) cable, ideal for office and call-center staff. With super light weight design, 60mm adjustable steel headband, 330° rotatable microphone boom and 180° rotatable joint of speaker and headband, ensures exceptional user comfort for all day use. The SVC-121 delivers superb wideband HD audio quality with excellent noise cancellation technology and remarkable anti-acoustic shock circuit. Moreover, users have the ability to leave desk without taking off their headset, due to the QD adapter. This headset is compatible with all IP and analog devices, enabling multiple connection choices with the optionally available QD bottom cables, such as QD to RJ9, QD to 3.5mm stereo plug, QD to USB 2.0 and more.

Key Features & Benefits:

• Monaural headset with advanced ergonomic, light weight design
• 330° rotatable microphone boom, 180° rotatable joint of speaker, 60mm adjustable pliable steel headband  
• Soft ear cushion and flexible headband provides maxium comfort for all day use
• Wideband HD audio and advansed noise cancelling technology ensures crystal clear sound in every conversation
• Sound channel: Mono
• Built-in anti-acoustic shock circuit filters out any sound above 118dB, complying with international hearing protection standards
• Headset cable with Quick Disconnect (QD) allows users to leave desk without taking off their headset 
• Multiple connection choices with the optionally available QD bottom cables
• Effortless connectivity with all IP and analog devices
• 1 Year Warranty

Microphone Specifications:

• Directivity: Uni-directional (Noise-cancelling)
• Diameter: φ 6.0 x 2.7mm
• Frequency Range: 100HZ - 10KHZ
• Sensitivity: -42 ±2dB (0dB=1V/Pa, 1 KHz)
• Impedance: 2.2K ohm, f=1KHz
• S/N Ratio: 65dB
• Ear Cushion Size: φ60mm*h18mm

Speaker Specifications:

• Drive Style: Dynamic (Moving-coiled)
• Outer Diameter: φ 28mm
• Resistance: 32 Ω+/-20%
• Frequency Response: 50HZ-10KHZ
• Sensitivity: 100±1dB (at 1 KHz 1mw)
• Distortion: ≤ 1%