Side by side comparison and review of JBL Under Armour Project Rock True Wireless X 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 | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 50 g | |
| Colour | Black | Black | White | |
| Protection | Waterproof, sweat-resistant, IPX7 | Dust-resistant, IP54, water-resistant | |
| Design | Sports | - | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 | Both headphones have the same Bluetooth version. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | - | AAC | |
| Noise Isolating | Yes | - | JBL Under Armour Project Rock True Wireless X are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 22000 Hz | 20 - 20000 Hz | JBL Under Armour Project Rock True Wireless X offer a larger frequency range than OPPO Enco W31. |
| Sensitivity | 96 dB/mW | 95 dB | JBL Under Armour Project Rock True Wireless X have higher sensitivity than OPPO Enco W31. |
| Impedance | 14 Ohm | - | |
| Max Sound Pressure | 96 dB | - | |
| Diaphragm | 5.8 mm | Graphene - 7 mm | OPPO Enco W31 have a thicker diaphragm than JBL Under Armour Project Rock True Wireless X. |
| Features | TalkThru technology, JBL Charged Sound, Ambient Aware | - |
| MICROPHONE | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Noise Cancelling | - | Yes | OPPO Enco W31 microphone can cancel out ambient noise. |
| Sensitivity | -25 dBV/Pascal | -38 dBV/Pascal |
| REMOTE CONTROL | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Controls | - | Next/previous track, voice assistant |
|---|
| CABLE | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Cable Type | USB-C charge cable - detachable | USB charge cable - detachable |
|---|
| FEATURES | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Sensors | - | Touch sensor |
|---|
| BATTERY AND CHARGING | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Battery Type | 2 x headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 120 mAh | 25 mAh | JBL Under Armour Project Rock True Wireless X have a higher battery capacity than OPPO Enco W31. |
| Battery Life | 10 hour(s) | 3.5 hour(s) | JBL Under Armour Project Rock True Wireless X lasts longer on a single charge than the OPPO Enco W31. |
| Battery Life Details | Continuous talk: up to 10 hours Continuous playback: up to 10 hours Continuous playback (with included charging case): up to 50 hours |
Continuous playback (with included charging case): up to 15 hours Continuous playback: up to 3.5 hours |
|
| Charging Time | 2 hour(s) | 2.5 hour(s) | JBL Under Armour Project Rock True Wireless X recharge faster than JBL Under Armour Project Rock True Wireless X. |
| Included Qty | 2 | 2 |
| OTHERS | JBL Under Armour Project Rock True Wireless X | OPPO Enco W31 |
|---|
| Included Accessories | Carrying case, 3 pairs of ear tips, 3 pairs of EarFins, sticker, USB-C charging cable, charging case (1500 mAh) | Ear tips kit, USB charge cable, charging case (350 mAh) | |
|---|---|---|---|
| Software Included | MapMyRun premium membership (12 months) | - | |
| Compliant Standards | IPX7 | - |
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