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                                                Logitech G633 Black
                                             | 
                                                Sennheiser HD 4.40 BT 4.0 25 Black
                                             | 
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| 3.5mm Connector | 1 mm | 1 mm | |
| Acoustic System Name | Closed Back | Closed Back | |
| Battery Life (max) | - | 25 hours | |
| Battery Technology | - | Lithium Polymer (LiPo) | |
| Bluetooth | - | Yes | |
| Bluetooth Profiles | - | APT-X | |
| Bluetooth Version | - | 4.0 | |
| Cable Length | 1.5 m | 1.4 m | |
| Cables Included | Audio (3.5mm), USB | Audio (3.5mm), USB | |
| Carrying Case | - | Yes | |
| Colour of Product | Black, Blue | Black | |
| Connectivity Technology | Wired | Wired & Wireless | |
| Detachable Cable | Yes | Yes | |
| Driver Unit Size | 40 cm | - | |
| Ear Coupling | Over-ear | Over-ear | |
| Ear Coupling - Over-ear | Yes | Yes | |
| Foldable | - | Yes | |
| Headphone Frequency | 20 - 20000 Hz | 18 - 22000 Hz | |
| Headphone or Headset | Mobile headset | Mobile headset | |
| Headphone Sensitivity | 107 dB | 113 dB | |
| Headset Type | Dual Ear | Dual-ear | |
| Impedance | 39 Ω (Ohms) | 18 Ω (Ohms) | |
| LED Indicators | - | Yes | |
| Mac Operating Systems Supported | Yes | - | |
| Microphone Frequency | 100 - 20000 Hz | 100 - 10000 Hz | |
| Microphone Number | 1 | 2 | |
| Multi-function Control - Position | On-ear | On-ear | |
| Multi-function Control - Type | Digital | Digital | |
| Multi-function Control Present | Yes | Yes | |
| NFC / W1 | - | Yes | |
| Nintendo Switch Compatible | Yes | - | |
| Noise Cancelling | Yes | - | |
| PS4 Compatible | Yes | - | |
| Purpose | PC/Gaming | - | |
| Sound Pressure Level (Max) | - | 113 dB | |
| Storage Pouch | - | Yes | |
| Surround Sound | Yes | - | |
| USB Connectivity | Yes | Yes | |
| USB Port - Micro | - | Yes | |
| USB Port - Type | - | Micro | |
| Volume Control Present | Yes | Yes | |
| Volume Control Type | Rotary | Digital | |
| Wearing Style | Head-band | Head-band | |
| Weight | 336 g | 225 g | |
| Windows Operating Systems Supported | Yes | - | |
| Wireless Type | - | Bluetooth | |
| XBox One Compatible | Yes | - | 
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