In depth comparison and review of Sennheiser HD 4.20s and Poly Voyager Focus UC B825S-M. 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 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 155 g | |
| Colour | Black | - | |
| Recommended Use | - | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 45 m |
| SOUND QUALITY | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Bluetooth Profiles | - | Advanced Audio Distribution Profile (A2DP) | |
| Active Noise Cancelling | - | Yes | Poly Voyager Focus UC B825S-M are equipped with active noice cancellation. |
| Noise Isolating | Yes | - | Sennheiser HD 4.20s are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo |
| MICROPHONE | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | Mono | |
| Sensitivity | -44 dBV/Pascal | - |
| REMOTE CONTROL | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Controls | 1-button remote | Volume |
|---|
| CABLE | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Cable Type | - | Charging cable | |
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Plated Connector | Gold | - |
| FEATURES | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Additional Functions | - | DSP |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Battery Type | - | Headset battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 15 hour(s) |
| CONNECTIONS | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | Bluetooth |
|---|
| OTHERS | Sennheiser HD 4.20s | Poly Voyager Focus UC B825S-M |
|---|
| Included Accessories | - | Carrying case, Bluetooth USB adapter, charging stand | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - 2 years |
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