Side by side comparison and review of Poly Blackwire 325-M and August EP650B. 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 | Poly Blackwire 325-M | August EP650B |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - Bluetooth - wireless - NFC - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | 300 Series | - | |
| Height | - | 17.66 cm | |
| Width | - | 18.86 cm | |
| Depth | - | 7.1 cm | |
| Weight | - | 235 g | |
| Headband Material | Metal | - | |
| Recommended Use | - | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Poly Blackwire 325-M | August EP650B |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Foldable | - | Yes | August EP650B can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 60 - 20000 Hz | Poly Blackwire 325-M offer a larger frequency range than August EP650B. |
| Total Harmonic Distortion (THD) | - | 1% | |
| Diaphragm | - | 50 mm | |
| Signal-To-Noise Ratio | - | 85 dB | |
| Features | SoundGuard Technology | Bluetooth aptX technology | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325-M | August EP650B |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Poly Blackwire 325-M | August EP650B |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 325-M | August EP650B |
|---|
| Cable Type | Headset cable - 2.13 m | Headphones cable - detachable | |
|---|---|---|---|
| Cable Length | 2.13 m | - |
| FEATURES | Poly Blackwire 325-M | August EP650B |
|---|
| Additional Functions | DSP | - |
|---|
| BATTERY AND CHARGING | Poly Blackwire 325-M | August EP650B |
|---|
| Battery Type | - | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 220 mAh | |
| Battery Life | - | 10 hour(s) | |
| Standby Time | - | 720 hours | |
| Charging Time | - | 2 hour(s) |
| CONNECTIONS | Poly Blackwire 325-M | August EP650B |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
Headphones (mini-phone stereo 3.5 mm) USB |
|---|
| OTHERS | Poly Blackwire 325-M | August EP650B |
|---|
| Compatibility | - | iPhone, iPad, iPod, Android phone | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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