The Cyber Acoustics AC-840 Internet USB Mono Headset is an adjustable, over-the-head style headset that can be worn on your right or left side. It connects via USB to a PC or Mac. Featuring a 30mm dynamic driver, the headset makes an ideal choice for Voice over Internet Protocol (VoIP). It has a flexible noise-cancelling boom mic with in-line volume control and a mute switch. The mic can be rotated 180 degrees for convenience. Additionally, the headset is outfitted with a leatherette earpad for comfort.
| Microphone | |
| Boom Rotation | |
| Microphone Distortion | |
| Microphone Frequency Response | 100 Hz to 16 kHz
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| Impedance | |
| Pickup Pattern | Uni-Directional
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| Speaker | |
| Driver Size | 30.00 mm
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| Cushion | |
| Earpiece Design | On-Ear
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| Listening Mode | Monaural
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| Speaker Frequency Response | 20 Hz to 20 kHz
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| Impedance | |
| Speaker Distortion | |
| Maximum Sound Pressure Level (SPL) | |
| Connectivity | |
| Hands Free Profile Version | |
| A2DP Profile Version | |
| Host Connection | 1 x USB Type-A
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| Rated Power | |
| Capacity (mAh) | |
| Battery Chemistry | |
| Standby Time | |
| Talk Time | |
| Operating Temperature | |
| Storage Temperature | |
| Operating Humidity | |
| General | |
| NFC | |
| Wearing Style | Over-the-Head
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| Frequency Mode | |
| Encryption Bit Depth | |
| Certifications | |
| Physical | |
| Ear Pad Size | |
| Cable Length | 7' / 2.1 m
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| Warranty Length | |