Side by side comparison and review of Sennheiser CX 400BT and Xiaomi Redmi Buds 3. 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 CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 1.69 cm | |
| Width | - | 4.07 cm | |
| Depth | - | 1.87 cm | |
| Weight | - | 4.5 g | |
| Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earphone: 4.07 cm x 1.87 cm x 1.69 cm / 4.5 g Charging case: 4.96 cm x 2.44 cm x 4.96 cm |
|
| Colour | White | Black | White | |
| Protection | - | Spill-resistant | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Headphones Form Factor | In-ear | Ear-bud | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.2 | Xiaomi Redmi Buds 3 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 | - | |
| Active Noise Cancelling | - | Yes | Xiaomi Redmi Buds 3 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 5 - 21000 Hz | - | |
| Total Harmonic Distortion (THD) | 0.08% | - | |
| Max Sound Pressure | 107 dB | - | |
| Diaphragm | 7 mm | 12 mm | Xiaomi Redmi Buds 3 have a thicker diaphragm than Sennheiser CX 400BT. |
| Features | - | QuickPair Function, built-in Qualcomm QCC3040 chip |
| MICROPHONE | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Xiaomi Redmi Buds 3 microphone can cancel out ambient noise. |
| Noise Cancelling Technology | - | cVc (clear Voice capture) by Qualcomm | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | Play/pause, next/previous track, answer call |
|---|
| CABLE | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | USB-C charge cable - detachable |
|---|
| FEATURES | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Features | Voice alerts, touch control | - | |
|---|---|---|---|
| Intelligent Assistant | Siri, Google Assistant | - |
| BATTERY AND CHARGING | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 35 mAh | Sennheiser CX 400BT have a higher battery capacity than Xiaomi Redmi Buds 3. |
| Battery Life | 7 hour(s) | 5 hour(s) | Sennheiser CX 400BT lasts longer on a single charge than the Xiaomi Redmi Buds 3. |
| Battery Life Details | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
Continuous playback: up to 5 hours Continuous playback (with included charging case): up to 20 hours |
|
| Charging Time | 1.5 hour(s) | - | |
| Included Qty | 2 | - |
| WIRELESS LINK | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Radio Transmitter Power | 10 mW | - |
|---|
| CONNECTIONS | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Connector Type | - | USB (power only) (USB Type-C) |
|---|
| OTHERS | Sennheiser CX 400BT | Xiaomi Redmi Buds 3 |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | Charging case (310 mAh) | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | IP54 | |
| Service & Support | - | Limited warranty - 2 years |
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