Side by side comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and Poly Voyager Focus UC B825-M, XS. 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 | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 21 cm | |
| Width | - | 18.6 cm | |
| Depth | - | 11.6 cm | |
| Weight | 227 g | 155 g | Poly Voyager Focus UC B825-M, XS are lighter than EPOS I SENNHEISER IMPACT MB 660 UC MS headphones. |
| Recommended Use | Portable electronics, computer | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 25 m | 30 m | Poly Voyager Focus UC B825-M, XS have a greater operating distance than EPOS I SENNHEISER IMPACT MB 660 UC MS. |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | EPOS I SENNHEISER IMPACT MB 660 UC MS can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 4.1 | EPOS I SENNHEISER IMPACT MB 660 UC MS have a more advanced version of Bluetooth than Poly Voyager Focus UC B825-M, XS. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Device ID Profile (DIP) | Advanced Audio Distribution Profile (A2DP) | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Adaptive Noise Control | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 23000 Hz | - | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 118 dB | - | |
| Impedance | 46 Ohm | - | |
| Features | - | SoundGuard DIGITAL Technology |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Frequency Response | 150 - 6800 Hz | - |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Controls | - | Volume, answer/end, microphone on/mute, play/pause |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Cable Type | Audio cable Micro-USB cable |
Charging cable |
|---|
| FEATURES | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Additional Functions | - | DSP |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Battery Type | Headset battery rechargeable | Headset battery rechargeable | |
|---|---|---|---|
| Battery Life | 30 hours | 15 hour(s) | EPOS I SENNHEISER IMPACT MB 660 UC MS lasts longer on a single charge than the Poly Voyager Focus UC B825-M, XS. |
| Battery Life Details | - | Continuous talk (noise cancelling OFF): up to 12 hours Continuous talk (noise cancelling ON): up to 10 hours Continuous playback (noise cancelling OFF): up to 15 hours Continuous playback (noise cancelling ON): up to 12 hours |
|
| Standby Time | 360 hours | - | |
| Charging Time | 3 hours | - |
| WIRELESS LINK | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Transmission Range | 25 m | - |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | Poly Voyager Focus UC B825-M, XS |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | Carrying case, Bluetooth USB adapter | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| TAA Compliant | - | Yes | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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