Side by side comparison and review of Huawei FreeBuds 4i and OPPO Enco W51. 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 | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | 3.75 cm | - | |
| Width | 2.1 cm | - | |
| Depth | 2.39 cm | - | |
| Weight | 5.5 g | 55.5 g | Huawei FreeBuds 4i are lighter than Huawei FreeBuds 4i headphones. |
| Dimensions & Weight Details | Charging case: 6.18 cm x 4.8 cm x 2.75 cm / 37 g | - | |
| Colour | Carbon black | Ceramic white | Red | White floral | Starry blue | |
| Protection | - | Dust-resistant, IP54, water-resistant | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.2 | Bluetooth 5.0 | Huawei FreeBuds 4i have a more advanced version of Bluetooth than OPPO Enco W51. |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | - | 20 - 20000 Hz | |
| Sensitivity | - | 103 dB | |
| Max Sound Pressure | 22 dB | - | |
| Diaphragm | 10 mm | 7 mm | Huawei FreeBuds 4i have a thicker diaphragm than OPPO Enco W51. |
| Features | Noise cancelling microphone, Awareness Mode | - |
| MICROPHONE | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Sensitivity | - | -38 dBV/Pascal | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Controls | Answer/end, play/pause, ANC on/off | - |
|---|
| CABLE | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Cable Type | USB-C charge cable - detachable | - |
|---|
| FEATURES | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Features | Touch control, fast charge | - | |
|---|---|---|---|
| Sensors | Touch sensor | - |
| BATTERY AND CHARGING | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 25 mAh | Huawei FreeBuds 4i have a higher battery capacity than OPPO Enco W51. |
| Battery Life | 10 hour(s) | 4 hour(s) | Huawei FreeBuds 4i lasts longer on a single charge than the OPPO Enco W51. |
| Battery Life Details | Continuous playback: up to 10 hours Continuous talk: up to 65 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 |
|
| Charging Time | 1 hour(s) | - | |
| Auto On/Off | Yes | - | |
| Included Qty | 2 | 2 |
| OTHERS | Huawei FreeBuds 4i | OPPO Enco W51 |
|---|
| Included Accessories | Charging case, 3 ear tips (small, medium, large), USB-C charging cable | Charging case (480 mAh) | |
|---|---|---|---|
| Compatibility | Android phone | - |
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