In depth comparison and review of Poly Voyager 4220 Office (UC Series) and Sennheiser HD 250BT. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Product Type | Headset - Bluetooth - wireless - USB-C | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Series | UC Series | - | |
| Weight | 150 g | 125 g | Sennheiser HD 250BT are lighter than Poly Voyager 4220 Office (UC Series) headphones. |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | 30 m | - |
| SOUND QUALITY | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 5.0 | Sennheiser HD 250BT have a more advanced version of Bluetooth than Poly Voyager 4220 Office (UC Series). |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC, AAC, aptX, apt-X LL | |
| Noise Isolating | - | Yes | Sennheiser HD 250BT are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 22000 Hz | Sennheiser HD 250BT offer a larger frequency range than Poly Voyager 4220 Office (UC Series). |
| Total Harmonic Distortion (THD) | - | <0.3% | |
| Sensitivity | 94 dB | 110 dB | Sennheiser HD 250BT have higher sensitivity than Poly Voyager 4220 Office (UC Series). |
| Impedance | 32 Ohm | - | |
| Diaphragm | 32 mm | 32 mm | Both headphones are designed with same thick diaphragm. |
| Features | SoundGuard Technology | Audio prompts |
| MICROPHONE | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Technology | - | Electret condenser | |
| Microphone Operation Mode | Uni-directional | Omni-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Controls | Mute, volume, answer/end, play/pause, next/previous track | Volume, on/off, answer/end, hold, play/pause, next/previous track, reject call |
|---|
| CABLE | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Cable Type | - | USB-C charge cable - detachable |
|---|
| FEATURES | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Features | Voice alerts | - |
|---|
| BATTERY AND CHARGING | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Battery Type | Headset battery rechargeable - lithium polymer | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 360 mAh | 190 mAh | Poly Voyager 4220 Office (UC Series) have a higher battery capacity than Sennheiser HD 250BT. |
| Battery Life | 12 hour(s) | 25 hour(s) | Sennheiser HD 250BT lasts longer on a single charge than the Poly Voyager 4220 Office (UC Series). |
| 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) | 3 hour(s) | Poly Voyager 4220 Office (UC Series) recharge faster than Poly Voyager 4220 Office (UC Series). |
| OTHERS | Poly Voyager 4220 Office (UC Series) | Sennheiser HD 250BT |
|---|
| Included Accessories | Wireless headset system base, Bluetooth USB-C adapter | USB-C charging cable | |
|---|---|---|---|
| Compatibility | - | iPhone, Android phone | |
| Compliant Standards | - | Bluetooth Class 1 |
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