Side by side comparison and review of SOUL RUN FREE PRO HD and OPPO Enco W31. 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 | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | 1.7 cm | - | |
| Width | 1.9 cm | - | |
| Depth | 3.2 cm | - | |
| Weight | 15 g | 50 g | SOUL RUN FREE PRO HD are lighter than SOUL RUN FREE PRO HD headphones. |
| Colour | Blue | Black | White | |
| Earpad Material | Memory foam | - | |
| Protection | Waterproof, sweat-resistant | Dust-resistant, IP54, water-resistant | |
| Design | Sports | - | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10.1 m | 10 m | SOUL RUN FREE PRO HD have a greater operating distance than OPPO Enco W31. |
| SOUND QUALITY | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Balanced armature | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.0 EDR | Bluetooth 5.0 | OPPO Enco W31 have a more advanced version of Bluetooth than SOUL RUN FREE PRO HD. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | - | AAC | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | - | 95 dB | |
| Diaphragm | - | Graphene - 7 mm | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Noise Cancelling | - | Yes | OPPO Enco W31 microphone can cancel out ambient noise. |
| Sensitivity | - | -38 dBV/Pascal |
| REMOTE CONTROL | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Controls | Volume control | Next/previous track, voice assistant |
|---|
| CABLE | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Cable Type | USB charge cable - detachable Headphones cable - reflective |
USB charge cable - detachable |
|---|
| FEATURES | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Sensors | - | Touch sensor |
|---|
| BATTERY AND CHARGING | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 25 mAh | |
| Battery Life | 12 hour(s) | 3.5 hour(s) | SOUL RUN FREE PRO HD lasts longer on a single charge than the OPPO Enco W31. |
| Battery Life Details | - | Continuous playback (with included charging case): up to 15 hours Continuous playback: up to 3.5 hours |
|
| Charging Time | - | 2.5 hour(s) | |
| Included Qty | - | 2 |
| OTHERS | SOUL RUN FREE PRO HD | OPPO Enco W31 |
|---|
| Included Accessories | Carrying case, cable clip, 2 pairs of foam ear tips, 4 pairs of ear tips (XS, small, medium, large), 2 pairs of ear locks | Ear tips kit, USB charge cable, charging case (350 mAh) | |
|---|---|---|---|
| Service & Support | Limited warranty - 1 year | - |
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