Detailed comparison and review of Audio-Technica ATH CKR55BT and OPPO Enco W51. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | Audio-Technica ATH CKR55BT | OPPO Enco W51 |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 17 g | 55.5 g | Audio-Technica ATH CKR55BT are lighter than Audio-Technica ATH CKR55BT headphones. |
| Colour | Steel black | White floral | Starry blue | |
| Protection | - | Dust-resistant, IP54, water-resistant | |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | 10 m | The maximum operating distance of both headphones is the same. |
| SOUND QUALITY | Audio-Technica ATH CKR55BT | 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 Audio-Technica ATH CKR55BT. |
| 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 | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 103 dB/mW | 103 dB | Both headphones offer the same sensitivity. |
| Impedance | 16 Ohm | - | |
| Diaphragm | 10.7 mm | 7 mm | Audio-Technica ATH CKR55BT have a thicker diaphragm than OPPO Enco W51. |
| MICROPHONE | Audio-Technica ATH CKR55BT | OPPO Enco W51 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Technology | Electret condenser | - | |
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Audio Input Details | Omni-directional - 100 - 10000 Hz | - | |
| Sensitivity | -44 dB | -38 dBV/Pascal |
| CABLE | Audio-Technica ATH CKR55BT | OPPO Enco W51 |
|---|
| Cable Type | Micro-USB charge cable - detachable - 30 cm | - |
|---|
| BATTERY AND CHARGING | Audio-Technica ATH CKR55BT | OPPO Enco W51 |
|---|
| Battery Type | 1 x headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 25 mAh | |
| Battery Life | 7 hour(s) | 4 hour(s) | Audio-Technica ATH CKR55BT 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 |
|
| Standby Time | 200 hours | - | |
| Charging Time | 3 hour(s) | - | |
| Included Qty | 1 | 2 |
| WIRELESS LINK | Audio-Technica ATH CKR55BT | OPPO Enco W51 |
|---|
| Modulation Type | FHSS | - | |
|---|---|---|---|
| Radio Frequency Range | 2.402 - 2.480GHz | - |
| OTHERS | Audio-Technica ATH CKR55BT | OPPO Enco W51 |
|---|
| Included Accessories | Clip, pouch case, 4 pairs of ear tips (XS, S,M, L) | Charging case (480 mAh) |
|---|
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