In depth comparison and review of Sennheiser HD 250BT and Poly Voyager Surround 85. 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 | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - Bluetooth - wireless - USB-C via Bluetooth adapter | |
|---|---|---|---|
| Series | - | Voyager Surround 80 series | |
| Height | - | 18.1 cm | |
| Width | - | 19.1 cm | |
| Depth | - | 7.7 cm | |
| Weight | 125 g | 275 g | Sennheiser HD 250BT are lighter than Sennheiser HD 250BT headphones. |
| Colour | - | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Headphones Form Factor | On-ear | Over ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | Yes | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.3 | Poly Voyager Surround 85 have a more advanced version of Bluetooth than Sennheiser HD 250BT. |
| 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), Audio/Video Distribution Transport Protocol (AVDTP) | |
| Bluetooth Audio Codec | SBC, AAC, aptX, apt-X LL | - | |
| Active Noise Cancelling | - | Yes | Poly Voyager Surround 85 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Adjustable noise cancellation | |
| Noise Isolating | Yes | - | Sennheiser HD 250BT are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 20 - 22000 Hz | - | |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Sensitivity | 110 dB | 132 dB | Poly Voyager Surround 85 have higher sensitivity than Sennheiser HD 250BT. |
| Diaphragm | 32 mm | 40 mm | Poly Voyager Surround 85 have a thicker diaphragm than Sennheiser HD 250BT. |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 2 | Poly Voyager Surround 85 have the ability to connect to multiple devices simultaneously. |
| Features | Audio prompts | SoundGuard DIGITAL Technology, Smart Sensor Technology |
| MICROPHONE | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Technology | Electret condenser | - | |
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | 20 - 16000 Hz | Poly Voyager Surround 85 offer a larger microphone frequency range than Sennheiser HD 250BT. |
| Sensitivity | - | -37 dB | |
| Microphones Included | - | 10 |
| REMOTE CONTROL | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Controls | Volume, on/off, answer/end, hold, play/pause, next/previous track, reject call | Volume, power on/off, answer/end, play/pause |
|---|
| CABLE | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Cable Type | USB-C charge cable - detachable | USB-C to mini-phone 3.5 mm cable USB-C charge cable - detachable |
|---|
| BATTERY AND CHARGING | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Battery Type | Headphone battery rechargeable | Headset battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 190 mAh | - | |
| Battery Life | 25 hour(s) | 24 hours | Sennheiser HD 250BT lasts longer on a single charge than the Poly Voyager Surround 85. |
| Battery Life Details | - | Continuous playback: up to 24 hours Continuous talk: up to 21 hours |
|
| Charging Time | 3 hour(s) | 1 hours | Poly Voyager Surround 85 recharge faster than Sennheiser HD 250BT. |
| OTHERS | Sennheiser HD 250BT | Poly Voyager Surround 85 |
|---|
| Included Accessories | USB-C charging cable | Carrying case, USB charging cable, charging stand, USB-C to USB-A adapter, USB-C to audio cable, BT700 Bluetooth USB-C adapter | |
|---|---|---|---|
| Software Included | - | Poly Lens | |
| Compatibility | iPhone, Android phone | Mac, Windows | |
| Software Certification | - | Certified for Microsoft Teams, Certified for Microsoft Teams Open Office, UC certified | |
| Supported Host Device OS | - | macOS, Android, iOS, Windows | |
| Compliant Standards | Bluetooth Class 1 | - |
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