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- Description：Active noise reduction technology, effectively shielding environmental noise
Characteristics：
- Active noise reduction technology, effectively shielding environmental noise
- Inline Volume control to adjust volume and mute control to quickly mute conversation
- External volume control to support up to 50 headphone volume adjustment;
- Sound quality USB wire for rough usages
- Meet 24 hours all-weather continuous use
HION QD-B9 Headphone adapter
VOIP telephone