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                                                Logitech H340 On-ear Black
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                                                Logitech LGT-H390 On-ear Black
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| Acoustic System Name | Closed Back | Closed Back | |
| Boom Microphone | Yes | Yes | |
| Cable Length | 1.8 m | 2.33 m | |
| Colour of Product | Black | Black | |
| Connectivity Technology | Wired | Wired | |
| Depth | 60 mm | 72 mm | |
| Ear Coupling | On-ear | On-ear | |
| Ear Coupling - On-ear | Yes | Yes | |
| Headphone Frequency | 20 - 20000 Hz | 20 - 20000 Hz | |
| Headphone or Headset | Headset | Headset | |
| Headphone Sensitivity | 115 dB | 94 dB | |
| Headset Type | Dual Ear | Dual Ear | |
| Height | 160 mm | 200 mm | |
| Impedance | 20 Ω (Ohms) | 32 Ω (Ohms) | |
| Mac Operating Systems Supported | Y | Y | |
| Microphone Frequency | 100 - 16000 Hz | 100 - 10000 Hz | |
| Microphone Number | 1 | 1 | |
| Microphone Sensitivity | -42 dB | -17 dB | |
| Multi-function Control - Position | - | On cable | |
| Multi-function Control - Type | - | Digital | |
| Multi-function Control Present | - | Yes | |
| Purpose | PC/Gaming | PC/Gaming | |
| USB Connectivity | Yes | Yes | |
| USB Port - Type | A | A | |
| USB Port - Type A | Yes | Yes | |
| Volume Control Present | - | Yes | |
| Volume Control Type | - | Rotary | |
| Wearing Style | Head-band | Head-band | |
| Weight | 100 g | 197 g | |
| Width | 175 mm | 245 mm | |
| Windows Operating Systems Supported | Y | Y | 
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