In depth comparison and review of Erato RIO 3 and OPPO Enco W51. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Erato RIO 3 | OPPO Enco W51 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | 4.6 cm | - | |
| Width | 5.1 cm | - | |
| Depth | 3.4 cm | - | |
| Weight | 14 g | 55.5 g | Erato RIO 3 are lighter than Erato RIO 3 headphones. |
| Colour | Yellow | Black | Turquoise | Green | Red | Silver | White floral | Starry blue | |
| Protection | Sweat-resistant, IPX5, water-resistant | 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 RIO 3 | OPPO Enco W51 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 5.0 | OPPO Enco W51 have a more advanced version of Bluetooth than Erato RIO 3. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC, aptX | - | |
| Active Noise Cancelling | - | Yes | OPPO Enco W51 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 100 dB | 103 dB | OPPO Enco W51 have higher sensitivity than Erato RIO 3. |
| Impedance | 32 Ohm | - | |
| Diaphragm | 14.2 mm | 7 mm | Erato RIO 3 have a thicker diaphragm than OPPO Enco W51. |
| MICROPHONE | Erato RIO 3 | OPPO Enco W51 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Sensitivity | -38 dB | -38 dBV/Pascal |
| REMOTE CONTROL | Erato RIO 3 | OPPO Enco W51 |
|---|
| Controls | Volume, power on/off, answer/end, play/pause, next/previous track, pair mode | - |
|---|
| BATTERY AND CHARGING | Erato RIO 3 | OPPO Enco W51 |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 130 mAh | 25 mAh | Erato RIO 3 have a higher battery capacity than OPPO Enco W51. |
| Battery Life | 8 hour(s) | 4 hour(s) | Erato RIO 3 lasts longer on a single charge than the OPPO Enco W51. |
| Battery Life Details | Continuous playback: up to 6 hours Continuous talk: up to 8 hours |
Continuous playback (noise cancelling OFF / cable connection): up to 24 hours Continuous playback (noise cancelling ON / cable connection): up to 20 hours Continuous playback (noise cancelling OFF): up to 4 hours Continuous playback (noise cancelling ON): up to 3.5 hours |
|
| Included Qty | 2 | 2 |
| OTHERS | Erato RIO 3 | OPPO Enco W51 |
|---|
| Included Accessories | - | Charging case (480 mAh) |
|---|
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