Addasound ADD-CRYSTAL2702 Entry Wired Binaural Headset

- Strong noise-canceling microphone, 80% background noise eliminated- Professional acoustic tune designed to assure more excellent effects for broadband speaker- Hearing protection meeting to the international standard, caring for your health constantly- Optional online volume switch, excellent effects for mute- Easily match crystal plug QD cables, 3.5mm double pluc PC cables and USB 2.0 QD cables- 330º adjustable microphone holder, microphone output automatic gain control to be compatible and matching for different systems- Adjustable headband, comfortable for having on the headset- Creative quick disconnection plug, easily for you being away from the telephone while still having on the headset. Liberating your hands and providing free communication with high efficiency.