In depth comparison and review of Sennheiser CX 400BT and Huawei FreeBuds Pro 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 | Huawei FreeBuds Pro 2 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 2.37 cm | |
| Width | - | 2.91 cm | |
| Depth | - | 2.18 cm | |
| Weight | - | 6.1 g | |
| Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earbud: 2.91 cm x 2.18 cm x 2.37 cm / 6.1 g Charging case: 6.79 cm x 2.45 cm x 4.75 cm / 52 g |
|
| Colour | White | Black | Silver blue | |
| Protection | - | Dust-resistant, wind protection, water-resistant | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Sennheiser CX 400BT | Huawei FreeBuds Pro 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 | Huawei FreeBuds Pro 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) | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | SBC, AAC, aptX | SBC, AAC, LDAC | |
| Active Noise Cancelling | - | Yes | Huawei FreeBuds Pro 2 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Intelligent Dynamic ANC 2.0 | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | Dynamic equaliser | |
| Frequency Response | 5 - 21000 Hz | 14 - 48000 Hz | Huawei FreeBuds Pro 2 offer a larger frequency range than Sennheiser CX 400BT. |
| Total Harmonic Distortion (THD) | 0.08% | - | |
| Max Sound Pressure | 107 dB | - | |
| Diaphragm | 7 mm | 11 mm | Huawei FreeBuds Pro 2 have a thicker diaphragm than Sennheiser CX 400BT. |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 2 | Huawei FreeBuds Pro 2 have the ability to connect to multiple devices simultaneously. |
| Features | - | Pure Voice Bone Conductor Sensor Technology |
| MICROPHONE | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Huawei FreeBuds Pro 2 microphone can cancel out ambient noise. |
| Microphones Included | - | 3 |
| REMOTE CONTROL | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | Volume, answer/end, play/pause, next/previous track, ANC on/off, press control, swipe control |
|---|
| CABLE | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | USB-C charge cable - detachable |
|---|
| FEATURES | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Features | Voice alerts, touch control | Transparent Hearing mode | |
|---|---|---|---|
| Intelligent Assistant | Siri, Google Assistant | - | |
| Sensors | - | Accelerometer, infrared (IR) sensor, bone sensor, gyroscope |
| BATTERY AND CHARGING | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - wireless charging | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 55 mAh | Both headphones are designed with the same battery capacity. |
| Battery Life | 7 hour(s) | 6.5 hour(s) | Sennheiser CX 400BT lasts longer on a single charge than the Huawei FreeBuds Pro 2. |
| 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 ON): up to 4 hours Continuous playback (noise cancelling OFF): up to 6.5 hours |
|
| Wireless Charging Standards | - | Qi | |
| Charging Time | 1.5 hour(s) | 40 min | Huawei FreeBuds Pro 2 recharge faster than Sennheiser CX 400BT. |
| Auto On/Off | - | Yes | |
| Included Qty | 2 | - |
| WIRELESS LINK | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Radio Transmitter Power | 10 mW | - |
|---|
| OTHERS | Sennheiser CX 400BT | Huawei FreeBuds Pro 2 |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | 3 pairs of silicone ear tips, USB-C charging cable, wireless charging case | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | IP54, IEC 60529 |
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