Detailed comparison and review of August EP650B and Poly Voyager 4220 UC. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | August EP650B | Poly Voyager 4220 UC |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC - USB, 3.5 mm jack | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Series | - | UC Series | |
| Height | 17.66 cm | - | |
| Width | 18.86 cm | - | |
| Depth | 7.1 cm | - | |
| Weight | 235 g | 150 g | Poly Voyager 4220 UC are lighter than August EP650B headphones. |
| Recommended Use | Portable electronics, computer | - | |
| Bluetooth Range (Operating Distance) | 10 m | 30 m | Poly Voyager 4220 UC have a greater operating distance than August EP650B. |
| SOUND QUALITY | August EP650B | Poly Voyager 4220 UC |
|---|
| 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 5.0 | Poly Voyager 4220 UC have a more advanced version of Bluetooth than August EP650B. |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC, mSBC | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 60 - 20000 Hz | 20 - 20000 Hz | Poly Voyager 4220 UC offer a larger frequency range than August EP650B. |
| Total Harmonic Distortion (THD) | 1% | - | |
| Impedance | - | 32 Ohm | |
| Diaphragm | 50 mm | 32 mm | August EP650B have a thicker diaphragm than Poly Voyager 4220 UC. |
| Signal-To-Noise Ratio | 85 dB | - | |
| Features | Bluetooth aptX technology | SoundGuard DIGITAL Technology |
| MICROPHONE | August EP650B | Poly Voyager 4220 UC |
|---|
| Form Factor | Built-in | Headset microphone | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | - | Uni-directional | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | August EP650B | Poly Voyager 4220 UC |
|---|
| Controls | - | Mute, volume, answer/end, play/pause, next/previous track, reject call, redial, voice assistant |
|---|
| CABLE | August EP650B | Poly Voyager 4220 UC |
|---|
| Cable Type | Headphones cable - detachable | - |
|---|
| FEATURES | August EP650B | Poly Voyager 4220 UC |
|---|
| Features | - | Voice alerts | |
|---|---|---|---|
| Intelligent Assistant | - | Alexa |
| BATTERY AND CHARGING | August EP650B | Poly Voyager 4220 UC |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headset battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | 220 mAh | 360 mAh | Poly Voyager 4220 UC have a higher battery capacity than August EP650B. |
| Battery Life | 10 hour(s) | 15 hour(s) | Poly Voyager 4220 UC 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 UC. |
| Charging Time | 2 hour(s) | 1.5 hour(s) | Poly Voyager 4220 UC recharge faster than August EP650B. |
| CONNECTIONS | August EP650B | Poly Voyager 4220 UC |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) USB |
Wireless adapter (4 PIN USB Type A) |
|---|
| OTHERS | August EP650B | Poly Voyager 4220 UC |
|---|
| Included Accessories | - | Bluetooth USB adapter, charging stand | |
|---|---|---|---|
| Compatibility | iPhone, iPad, iPod, Android phone | - |
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