A nice soundproof headset/microphone combination, perfect for hands-free telephones and dictation.
Plug the super-comfortable HM 618Vs into your telephone or use them with your voice-recognition software. Soft full-coverage earpieces cancel outside noise. Also perfect for call centers.

Features:
Professional stereo headphone with leatherette ear pads and adjustable headband. Features volume control.

Frequency Response:
Microphone: 100Hz-10KHz
Headphone: 20Hz-10KHz

Sensitivity:
Microphone: -54dB+/-3dB at 1KHz
Headphone: 92dB SPL

Impedance:
Microphone: 2K Ohms
Headphone: 32 Ohms

Total Harmonic Distortion:
Microphone: <0.5%
Headphone: <0.5%

Shielded cord length: 6'
warranty information