In depth comparison and review of Sennheiser HD 250BT and Poly Voyager Focus B825. 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 Focus B825 |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | |
|---|---|---|---|
| Height | - | 7 cm | |
| Width | - | 18.3 cm | |
| Depth | - | 16 cm | |
| Weight | 125 g | 155 g | Sennheiser HD 250BT are lighter than Sennheiser HD 250BT headphones. |
| Colour | - | Black | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Sennheiser HD 250BT | Poly Voyager Focus B825 |
|---|
| 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 5.0 | Bluetooth 4.1 | Sennheiser HD 250BT have a more advanced version of Bluetooth than Poly Voyager Focus B825. |
| Bluetooth Profiles | 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 | - | |
| Active Noise Cancelling | - | Yes | Poly Voyager Focus B825 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard DIGITAL | |
| Noise Isolating | Yes | - | Sennheiser HD 250BT are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 250BT offer a larger frequency range than Poly Voyager Focus B825. |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Sensitivity | 110 dB | - | |
| Diaphragm | 32 mm | 32 mm | Both headphones are designed with same thick diaphragm. |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 8 | Poly Voyager Focus B825 have the ability to connect to multiple devices simultaneously. |
| Features | Audio prompts | Smart Sensor Technology |
| MICROPHONE | Sennheiser HD 250BT | Poly Voyager Focus B825 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Technology | Electret condenser | - | |
| Microphone Operation Mode | Omni-directional | MEMS-directional | |
| Frequency Response | 100 - 10000 Hz | 100 - 6700 Hz | Sennheiser HD 250BT offer a larger microphone frequency range than Poly Voyager Focus B825. |
| Microphones Included | - | 3 |
| REMOTE CONTROL | Sennheiser HD 250BT | Poly Voyager Focus B825 |
|---|
| Controls | Volume, on/off, answer/end, hold, play/pause, next/previous track, reject call | Volume, answer/end, microphone on/mute, play/pause |
|---|
| CABLE | Sennheiser HD 250BT | Poly Voyager Focus B825 |
|---|
| Cable Type | USB-C charge cable - detachable | Micro-USB charging cable |
|---|
| BATTERY AND CHARGING | Sennheiser HD 250BT | Poly Voyager Focus B825 |
|---|
| Battery Type | Headphone battery rechargeable | Headset battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 190 mAh | 325 mAh | Poly Voyager Focus B825 have a higher battery capacity than Sennheiser HD 250BT. |
| Battery Life | 25 hour(s) | 15 hour(s) | Sennheiser HD 250BT lasts longer on a single charge than the Poly Voyager Focus B825. |
| Battery Life Details | - | Continuous playback (AAC, active noise-cancelling on): up to 12 hours Continuous talk (active noise-cancelling off): up to 12 hours Continuous talk (active noise-cancelling on): up to 10 hours Continuous playback (active noise-cancelling off): up to 15 hours |
|
| Charging Time | 3 hour(s) | 2 hour(s) | Poly Voyager Focus B825 recharge faster than Sennheiser HD 250BT. |
| OTHERS | Sennheiser HD 250BT | Poly Voyager Focus B825 |
|---|
| Included Accessories | USB-C charging cable | Travel pouch, BT700 Bluetooth USB adapter | |
|---|---|---|---|
| Compatibility | iPhone, Android phone | - | |
| Software Certification | - | Certified for Skype for Business | |
| Compliant Standards | Bluetooth Class 1 | - | |
| TAA Compliant | - | Yes |
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
