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Logitech H820e DECT 10hrs Black
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Sennheiser HDR 120 RF 20hrs Black
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Technical Specifications
| AC Adapter Included | Yes | - | |
| Acoustic System Name | Closed Back | Open Back | |
| Battery Life (max) | 10 hours | 20 hours | |
| Battery Technology | Lithium-Ion (Li-Ion) | - | |
| Battery Type | - | AAA | |
| Boom Microphone | Yes | - | |
| Cables Included | USB 2.0 | - | |
| Charging Source | Charging stand | - | |
| Colour of Product | Black | Black | |
| Connectivity Technology | Wireless | Wireless | |
| Depth | 165 mm | - | |
| Driver Type | - | Dynamic | |
| Ear Coupling | On-ear | On-ear | |
| Ear Coupling - On-ear | Yes | Yes | |
| Headphone Frequency | 150 - 7000 Hz | 22 - 19500 Hz | |
| Headphone or Headset | Headset | Headphones | |
| Headphone Sensitivity | 103 dB | 106 dB | |
| Headset Type | Dual-ear | Dual Ear | |
| Height | 50 mm | - | |
| Impedance | - | 24 Ω (Ohms) | |
| LED Indicators | Yes | - | |
| Mac Operating Systems Supported | macOS 10.7 or higher | - | |
| Microphone Frequency | 100 - 7000 Hz | - | |
| Microphone Number | 1 | 1 | |
| Microphone Sensitivity | -45 dB | - | |
| Multi-function Control - Position | On-ear | 1 | |
| Multi-function Control - Type | Digital | Digital | |
| Multi-function Control Present | Yes | Yes | |
| Number of Batteries Supported | - | 2 | |
| Purpose | Call center/Office | - | |
| Rechargeable | Yes | - | |
| RF Connectivity | - | Yes | |
| Volume Control Present | Yes | Yes | |
| Volume Control Type | Button | Rotary | |
| Wearing Style | Head-band | Head-band | |
| Weight | 128 g | 230 g | |
| Width | 174 mm | - | |
| Windows Operating Systems Supported | Windows Vista® or higher | - | |
| Wireless Range | 100 m | - | |
| Wireless Type | DECT | - |
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