In depth comparison and review of August EP650B and Poly Voyager 4220 Office (UC Series). 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 | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC - USB, 3.5 mm jack | Headset - Bluetooth - wireless - USB-C | |
|---|---|---|---|
| Series | - | UC Series | |
| Height | 17.66 cm | - | |
| Width | 18.86 cm | - | |
| Depth | 7.1 cm | - | |
| Weight | 235 g | 150 g | Poly Voyager 4220 Office (UC Series) are lighter than August EP650B headphones. |
| Recommended Use | Portable electronics, computer | - | |
| Bluetooth Range (Operating Distance) | 10 m | 30 m | Poly Voyager 4220 Office (UC Series) have a greater operating distance than August EP650B. |
| SOUND QUALITY | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Foldable | Yes | - | August EP650B can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 4.1 | Both headphones have the same Bluetooth version. |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 60 - 20000 Hz | 20 - 20000 Hz | Poly Voyager 4220 Office (UC Series) offer a larger frequency range than August EP650B. |
| Total Harmonic Distortion (THD) | 1% | - | |
| Sensitivity | - | 94 dB | |
| Impedance | - | 32 Ohm | |
| Diaphragm | 50 mm | 32 mm | August EP650B have a thicker diaphragm than Poly Voyager 4220 Office (UC Series). |
| Signal-To-Noise Ratio | 85 dB | - | |
| Features | Bluetooth aptX technology | SoundGuard Technology |
| MICROPHONE | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | - | Uni-directional | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Controls | - | Mute, volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Cable Type | Headphones cable - detachable | - |
|---|
| FEATURES | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Features | - | Voice alerts |
|---|
| BATTERY AND CHARGING | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headset battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | 220 mAh | 360 mAh | Poly Voyager 4220 Office (UC Series) have a higher battery capacity than August EP650B. |
| Battery Life | 10 hour(s) | 12 hour(s) | Poly Voyager 4220 Office (UC Series) lasts longer on a single charge than the August EP650B. |
| Battery Life Details | - | Continuous playback: up to 15 hours Continuous talk: up to 12 hours |
|
| Standby Time | 720 hours | 312 hours | August EP650B have longer standby time than Poly Voyager 4220 Office (UC Series). |
| Charging Time | 2 hour(s) | 1.5 hour(s) | Poly Voyager 4220 Office (UC Series) recharge faster than August EP650B. |
| CONNECTIONS | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) USB |
- |
|---|
| OTHERS | August EP650B | Poly Voyager 4220 Office (UC Series) |
|---|
| Included Accessories | - | Wireless headset system base, Bluetooth USB-C adapter | |
|---|---|---|---|
| Compatibility | iPhone, iPad, iPod, Android phone | - |
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