In depth comparison and review of Sennheiser HD 4.50 BTNC Wireless 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 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 238 g | 155 g | Poly Voyager Focus UC B825S-M are lighter than Sennheiser HD 4.50 BTNC Wireless headphones. |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 45 m |
| SOUND QUALITY | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser HD 4.50 BTNC Wireless can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.0 | Bluetooth 4.1 | Poly Voyager Focus UC B825S-M have a more advanced version of Bluetooth than Sennheiser HD 4.50 BTNC Wireless. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Advanced Audio Distribution Profile (A2DP) | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | - | |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 113 dB | - | |
| Impedance | 18 Ohm | - | |
| Magnet Material | Neodymium | - | |
| Features | Bluetooth aptX technology | - |
| MICROPHONE | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Omni-directional | Mono | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Controls | Power on/off, volume control, answer/end, hold, play/pause, next/previous track, reject call, redial | Volume |
|---|
| CABLE | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Cable Type | Headphones cable - detachable - L shaped - 1.4 m Micro-USB charge cable - detachable |
Charging cable | |
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Detachable Cable | Yes | - | |
| Plated Connector | Gold | - |
| FEATURES | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Additional Functions | - | DSP |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headset battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 600 mAh | - | |
| Battery Life | 25 hour(s) | 15 hour(s) | Sennheiser HD 4.50 BTNC Wireless lasts longer on a single charge than the Poly Voyager Focus UC B825S-M. |
| Charging Time | 2 hour(s) | - |
| CONNECTIONS | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | Bluetooth |
|---|
| OTHERS | Sennheiser HD 4.50 BTNC Wireless | Poly Voyager Focus UC B825S-M |
|---|
| Included Accessories | Carrying case, micro-USB charging cable | Carrying case, Bluetooth USB adapter, charging stand | |
|---|---|---|---|
| Service & Support | - | Limited warranty - 2 years |
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