Detailed comparison and review of Koss UR 23i and Poly Voyager 4220. 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 | Koss UR 23i | Poly Voyager 4220 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Series | - | 4200 UC Series | |
| Weight | - | 150 g | |
| Colour | White | Black | - | |
| Recommended Use | Portable electronics | - | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Koss UR 23i | Poly Voyager 4220 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| 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. |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | 32 Ohm | |
| Diaphragm | - | 32 mm | |
| Features | - | SoundGuard DIGITAL Technology |
| MICROPHONE | Koss UR 23i | Poly Voyager 4220 |
|---|
| Form Factor | - | Headset microphone | |
|---|---|---|---|
| Type | On-cable | Boom | |
| Microphone Operation Mode | - | Uni-directional, MEMS-directional | |
| Noise Cancelling | - | Yes | Poly Voyager 4220 microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 6800 Hz | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Koss UR 23i | Poly Voyager 4220 |
|---|
| Controls | - | Mute, volume, answer/end, play/pause, next/previous track, reject call, redial, voice assistant |
|---|
| CABLE | Koss UR 23i | Poly Voyager 4220 |
|---|
| Cable Type | Headphones cable - 1.22 m | - |
|---|
| FEATURES | Koss UR 23i | Poly Voyager 4220 |
|---|
| Features | - | Voice alerts |
|---|
| BATTERY AND CHARGING | Koss UR 23i | Poly Voyager 4220 |
|---|
| Battery Type | - | Headset battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 360 mAh | |
| Battery Life | - | 15 hour(s) | |
| Battery Life Details | - | Continuous playback: up to 15 hours Continuous talk: up to 12 hours |
|
| Standby Time | - | 312 hours | |
| Charging Time | - | 1.5 hour(s) |
| CONNECTIONS | Koss UR 23i | Poly Voyager 4220 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | - |
|---|
| OTHERS | Koss UR 23i | Poly Voyager 4220 |
|---|
| Included Accessories | - | Bluetooth USB adapter | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| Service & Support | Limited warranty - lifetime | - |
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