Detailed comparison and review of KEF M500 and Poly Voyager 4220 USB-C. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
DESIGN AND DIMENSIONS | KEF M500 | Poly Voyager 4220 USB-C |
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Product Type | Headset - wired | Headset - Bluetooth - wireless - USB-C | |
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Series | - | UC Series | |
Weight | 208 g | 150 g | Poly Voyager 4220 USB-C are lighter than KEF M500 headphones. |
Colour | Classic | - | |
Body Material | Aluminium alloy | - | |
Recommended Use | Portable electronics, phone | - | |
Bluetooth Range (Operating Distance) | - | 30 m |
SOUND QUALITY | KEF M500 | Poly Voyager 4220 USB-C |
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Headphones Form Factor | On-ear | On-ear | |
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Adjustable Headband | Yes | - | |
Foldable | Yes | - | KEF M500 can be folded. |
Connectivity Technology | Wired | Wireless | |
Wireless Technology | - | Bluetooth | |
Bluetooth Version | - | Bluetooth 5.0 | |
Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
Bluetooth Audio Codec | - | SBC, mSBC | |
Sound Output Mode | Stereo | Stereo | |
Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
Max Input Power | 30 mW | - | |
Sensitivity | 103 dB | 94 dB | KEF M500 have higher sensitivity than Poly Voyager 4220 USB-C. |
Impedance | 32 Ohm | 32 Ohm | |
Diaphragm | 40 mm | 32 mm | KEF M500 have a thicker diaphragm than Poly Voyager 4220 USB-C. |
Magnet Material | Neodymium | - | |
Features | - | SoundGuard DIGITAL Technology | |
In-Cord Volume Control | Yes | - |
MICROPHONE | KEF M500 | Poly Voyager 4220 USB-C |
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Form Factor | - | Headset microphone | |
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Type | On-cable | Boom | |
Microphone Operation Mode | - | Uni-directional | |
Microphones Included | - | 2 |
REMOTE CONTROL | KEF M500 | Poly Voyager 4220 USB-C |
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Controls | Volume, answer/end, play/pause, next/previous track | Mute, volume, answer/end, play/pause, next/previous track, reject call, redial, voice assistant |
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CABLE | KEF M500 | Poly Voyager 4220 USB-C |
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Cable Type | 2 x headset cable - 1.3 m | - | |
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Plated Connector | Gold | - |
FEATURES | KEF M500 | Poly Voyager 4220 USB-C |
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Features | - | Voice alerts |
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BATTERY AND CHARGING | KEF M500 | Poly Voyager 4220 USB-C |
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Battery Type | - | Headset battery rechargeable - lithium polymer | |
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Battery Capacity | - | 360 mAh | |
Battery Life | - | 15 hour(s) | |
Battery Life Details | - | Continuous playback: up to 15 hours Continuous talk: up to 12 hours |
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Standby Time | - | 312 hours | |
Charging Time | - | 1.5 hour(s) |
CONNECTIONS | KEF M500 | Poly Voyager 4220 USB-C |
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Connector Type | Headset (mini-phone stereo 3.5 mm) | - |
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OTHERS | KEF M500 | Poly Voyager 4220 USB-C |
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Included Accessories | Protective case, in-flight plug adapter, 3.5 mm to 6.3 mm adapter | Bluetooth USB adapter, charging stand | |
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Software Certification | - | Certified for Microsoft Teams | |
Service & Support | Limited warranty - 1 year | - |