In depth comparison and review of Sennheiser CX 400BT and OPPO Enco Buds 2. 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 | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earphone: 4 g Charging case: 5.7 cm x 5.7 cm x 2.56 cm / 30 g Charging case with earphones: 38 g |
|
| Colour | White | Black | Moonlight | |
| Protection | - | IPX4 | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.2 | OPPO Enco Buds 2 have a more advanced version of Bluetooth than Sennheiser CX 400BT. |
| 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 | SBC, AAC | |
| Active Noise Cancelling | - | Yes | OPPO Enco Buds 2 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 5 - 21000 Hz | 20 - 20000 Hz | Sennheiser CX 400BT offer a larger frequency range than OPPO Enco Buds 2. |
| Total Harmonic Distortion (THD) | 0.08% | - | |
| Sensitivity | - | 101 dB | |
| Max Sound Pressure | 107 dB | - | |
| Diaphragm | 7 mm | - |
| MICROPHONE | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Noise Cancelling | - | Yes | OPPO Enco Buds 2 microphone can cancel out ambient noise. |
| REMOTE CONTROL | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | - |
|---|
| CABLE | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | - |
|---|
| FEATURES | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Features | Voice alerts, touch control | Touch control, noise reduction | |
|---|---|---|---|
| Intelligent Assistant | Siri, Google Assistant | - |
| BATTERY AND CHARGING | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | 2 x headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 40 mAh | Sennheiser CX 400BT have a higher battery capacity than OPPO Enco Buds 2. |
| Battery Life | 7 hour(s) | 7 hours | Both headphones last the same amount of time on a single charge. |
| Battery Life Details | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
Continuous playback (noise cancelling OFF): up to 7 hours Continuous playback (noise cancelling OFF / with included charging case): up to 28 hours |
|
| Charging Time | 1.5 hour(s) | 90 min | The charging of both headphones last the same time. |
| Included Qty | 2 | 2 |
| WIRELESS LINK | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Radio Transmitter Power | 10 mW | - |
|---|
| OTHERS | Sennheiser CX 400BT | OPPO Enco Buds 2 |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | Charging case (460 mAh) | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | IPX4 |
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