In depth comparison and review of August EP650 and Poly Voyager 4220 (Office 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 EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC - 3.5 mm jack | Headset - Bluetooth - wireless - USB-C | |
|---|---|---|---|
| Series | - | Office Series | |
| Height | 17.66 cm | - | |
| Width | 18.86 cm | - | |
| Depth | 7.1 cm | - | |
| Weight | 235 g | 150 g | Poly Voyager 4220 (Office Series) are lighter than August EP650 headphones. |
| Colour | Gold | - | |
| Recommended Use | Portable electronics, computer | - | |
| Bluetooth Range (Operating Distance) | 10 m | 91 m | Poly Voyager 4220 (Office Series) have a greater operating distance than August EP650. |
| SOUND QUALITY | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Foldable | Yes | - | August EP650 can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 5.0 | Poly Voyager 4220 (Office Series) have a more advanced version of Bluetooth than August EP650. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 60 - 20000 Hz | 20 - 20000 Hz | Poly Voyager 4220 (Office Series) offer a larger frequency range than August EP650. |
| Total Harmonic Distortion (THD) | 1% | - | |
| Impedance | - | 32 Ohm | |
| Diaphragm | 50 mm | 32 mm | August EP650 have a thicker diaphragm than Poly Voyager 4220 (Office Series). |
| Signal-To-Noise Ratio | 85 dB | - | |
| Features | Bluetooth aptX technology | SoundGuard DIGITAL Technology |
| MICROPHONE | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | - | Uni-directional | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Controls | - | Mute, volume, answer/end, next/previous track, redial |
|---|
| CABLE | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Cable Type | Headphones cable - detachable | - |
|---|
| FEATURES | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Features | - | Voice alerts |
|---|
| BATTERY AND CHARGING | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headset battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 220 mAh | 360 mAh | Poly Voyager 4220 (Office Series) have a higher battery capacity than August EP650. |
| Battery Life | 10 hour(s) | 12 hour(s) | Poly Voyager 4220 (Office Series) lasts longer on a single charge than the August EP650. |
| Battery Life Details | - | Continuous playback: up to 15 hours Continuous talk: up to 12 hours |
|
| Standby Time | 720 hours | 312 hours | August EP650 have longer standby time than Poly Voyager 4220 (Office Series). |
| Charging Time | 2 hour(s) | 1.5 hour(s) | Poly Voyager 4220 (Office Series) recharge faster than August EP650. |
| CONNECTIONS | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (24 pin USB-C) |
|---|
| OTHERS | August EP650 | Poly Voyager 4220 (Office Series) |
|---|
| Included Accessories | USB charging cable | - | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| Service & Support | Limited warranty - 1 year | - |
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