Side by side comparison and review of Erato Apollo 7S 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 | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Width | 1.54 cm | - | |
| Depth | 2.22 cm | - | |
| Weight | 4 g | 50 g | Erato Apollo 7S are lighter than Erato Apollo 7S headphones. |
| Dimensions & Weight Details | Charging case: 6.25 cm x 4 cm x 2.55 cm / 52 g | - | |
| Colour | Black | Space grey | Rose gold | Silver | Black | White | |
| Protection | Weatherproof, sweat-resistant, IPX5 | Dust-resistant, IP54, water-resistant | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | 10 m | The maximum operating distance of both headphones is the same. |
| SOUND QUALITY | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 5.0 | OPPO Enco W31 have a more advanced version of Bluetooth than Erato Apollo 7S. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | - | AAC | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | 3D Surround Sound | - | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 100 dB | 95 dB | Erato Apollo 7S have higher sensitivity than OPPO Enco W31. |
| Impedance | 16 Ohm | - | |
| Diaphragm | 5.8 mm | Graphene - 7 mm | OPPO Enco W31 have a thicker diaphragm than Erato Apollo 7S. |
| Features | Bluetooth aptX technology | - |
| MICROPHONE | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Noise Cancelling | - | Yes | OPPO Enco W31 microphone can cancel out ambient noise. |
| Sensitivity | -42 dB | -38 dBV/Pascal |
| REMOTE CONTROL | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Controls | Volume, answer/end, play/pause, next/previous track | Next/previous track, voice assistant |
|---|
| CABLE | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Cable Type | USB charge cable | USB charge cable - detachable |
|---|
| FEATURES | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Sensors | - | Touch sensor |
|---|
| BATTERY AND CHARGING | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 25 mAh | |
| Battery Life | 4 hours | 3.5 hour(s) | Erato Apollo 7S lasts longer on a single charge than the OPPO Enco W31. |
| Battery Life Details | Continuous talk: up to 4 hours Continuous playback: up to 3 hours |
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 | Erato Apollo 7S | OPPO Enco W31 |
|---|
| Included Accessories | 3 pairs of Comply foam ear tips, charging case, 3 pairs of ear stabilisers (small, medium, large) | Ear tips kit, USB charge cable, charging case (350 mAh) |
|---|
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