Side by side comparison and review of Sennheiser HD 450BT and Poly Voyager Focus B825-M. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | |
|---|---|---|---|
| Height | - | 7 cm | |
| Width | - | 18.3 cm | |
| Depth | - | 16 cm | |
| Weight | 238 g | 155 g | Poly Voyager Focus B825-M are lighter than Sennheiser HD 450BT headphones. |
| Colour | Black | White | Black | |
| Recommended Use | - | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser HD 450BT can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 4.1 | Sennheiser HD 450BT have a more advanced version of Bluetooth than Poly Voyager Focus B825-M. |
| 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 | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 450BT offer a larger frequency range than Poly Voyager Focus B825-M. |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Max Sound Pressure | 108 dB | - | |
| Diaphragm | - | 32 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 8 | Poly Voyager Focus B825-M have the ability to connect to multiple devices simultaneously. |
| Features | - | Smart Sensor Technology |
| MICROPHONE | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Beamforming | MEMS-directional | |
| Frequency Response | 80 - 6000 Hz | 100 - 6700 Hz | Poly Voyager Focus B825-M offer a larger microphone frequency range than Sennheiser HD 450BT. |
| Microphones Included | 2 | 3 | Poly Voyager Focus B825-M have a built-in microphone. |
| REMOTE CONTROL | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Controls | - | Volume, answer/end, microphone on/mute, play/pause |
|---|
| CABLE | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Cable Type | Audio cable - detachable USB-C charge cable - detachable |
Micro-USB charging cable |
|---|
| BATTERY AND CHARGING | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headset battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 600 mAh | 325 mAh | Sennheiser HD 450BT have a higher battery capacity than Poly Voyager Focus B825-M. |
| Battery Life | 30 hours | 15 hour(s) | Sennheiser HD 450BT lasts longer on a single charge than the Poly Voyager Focus B825-M. |
| 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 | 2 hours | 2 hour(s) | The charging of both headphones last the same time. |
| OTHERS | Sennheiser HD 450BT | Poly Voyager Focus B825-M |
|---|
| Included Accessories | Carrying case | Travel pouch, BT700 Bluetooth USB adapter | |
|---|---|---|---|
| Software Certification | - | Certified for Skype for Business, Certified for Microsoft Teams | |
| Service & Support | Limited warranty - 2 years | - |
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