Side by side comparison and review of Sennheiser MOMENTUM M2 IEBT 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 | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Product Type | Earphones - Bluetooth - wireless - NFC | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 53 g | 55.5 g | Sennheiser MOMENTUM M2 IEBT are lighter than Sennheiser MOMENTUM M2 IEBT headphones. |
| Colour | Black | White floral | Starry blue | |
| Earpad Material | Stainless steel | - | |
| Protection | - | 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 | Sennheiser MOMENTUM M2 IEBT | 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 4.1 | Bluetooth 5.0 | OPPO Enco W51 have a more advanced version of Bluetooth than Sennheiser MOMENTUM M2 IEBT. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Active Noise Cancelling | - | Yes | OPPO Enco W51 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 15 - 22000 Hz | 20 - 20000 Hz | Sennheiser MOMENTUM M2 IEBT offer a larger frequency range than OPPO Enco W51. |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 112 dB | 103 dB | Sennheiser MOMENTUM M2 IEBT have higher sensitivity than OPPO Enco W51. |
| Impedance | 18 Ohm | - | |
| Diaphragm | - | 7 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | 2 | - | Sennheiser MOMENTUM M2 IEBT have the ability to connect to multiple devices simultaneously. |
| Features | Voice guidance | - |
| MICROPHONE | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Sensitivity | -44 dBV/Pascal | -38 dBV/Pascal |
| REMOTE CONTROL | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Controls | Power on/off, volume control, play/pause button, next/previous track | - |
|---|
| CABLE | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Cable Type | Micro-USB charge cable - detachable | - |
|---|
| BATTERY AND CHARGING | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 170 mAh | 25 mAh | Sennheiser MOMENTUM M2 IEBT have a higher battery capacity than OPPO Enco W51. |
| Battery Life | 10 hour(s) | 4 hour(s) | Sennheiser MOMENTUM M2 IEBT lasts longer on a single charge than the OPPO Enco W51. |
| Battery Life Details | - | 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 | 1.5 hour(s) | - | |
| Included Qty | - | 2 |
| WIRELESS LINK | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Transmission Range | 10 m | - |
|---|
| OTHERS | Sennheiser MOMENTUM M2 IEBT | OPPO Enco W51 |
|---|
| Included Accessories | Carrying case, 4 pairs of ear tips (supersmall, small, medium, large) | Charging case (480 mAh) |
|---|
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