OnePlus Buds 4 vs CMF Ear (R) B171 2024
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  OnePlus Buds 4 |  CMF Ear (R) B171 2024 |
|---|---|---|
| Price | KSh 16,000.00 | KSh 16,500.00 |
| Drivers | 11mm woofer (30-layer ceramic-metal) + 6mm tweeter (flat diaphragm) per earbud | 11mm ceramic dynamic driver |
| Connection | Bluetooth 5.4, LHDC 5.0 for Hi-Res, 47ms low latency, Google Fast Pair | Bluetooth |
| Active Noise Cancellation | Adaptive ANC up to 55dB, real-time adjustment, Transparency Mode | Up to 45dB ANC |
| Battery Life | Up to 11 hours per bud (ANC off, AAC)/9 hours (LHDC); Case: Up to 34 hours additional (ANC off) | Up to 40.5 hours with charging case |
| Water & Dust Resistance | IP55 (earbuds) | IP54 earbuds; IP55 case |
| Weight | Earbud: 4.5g each; Case: 40g | 4.62g per earbud; 51.9g case |
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Full specifications
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General
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Brand | OnePlus | — |
| Model | Buds 4 | Ear (2024) (B171) |
| Announced | 2025 | 2024 |
| Type | True Wireless In-Ear Earbuds | True Wireless In-Ear Earbuds |
| Color | Zen Green, Storm Gray | Black, White |
Design
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Weight | Earbud: 4.5g each; Case: 40g | 4.62g per earbud; 51.9g case |
Battery & Charging
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Battery Life | Up to 11 hours per bud (ANC off, AAC)/9 hours (LHDC); Case: Up to 34 hours additional (ANC off) | Up to 40.5 hours with charging case |
| Charging Time | 10 minutes for 11 hours (ANC off); Full charge: 1 hour for earbuds, 2 hours for case | — |
| Charging Port | USB-C, 10 minutes for 11 hours (ANC off) | USB-C (case) |
| Wireless Charging | — | Yes (case) |
Connectivity
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Connection | Bluetooth 5.4, LHDC 5.0 for Hi-Res, 47ms low latency, Google Fast Pair | Bluetooth |
| Bluetooth | 5.4 with dual-device connection | Bluetooth 5.3 |
| Multipoint Connection | — | Yes |
| App Support | — | Nothing X |
Features
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Special Features | Dual DACs; Hi-Res Audio; Golden Sound personalization | Active Noise Cancellation + Hi-Res Audio |
Audio
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Drivers | 11mm woofer (30-layer ceramic-metal) + 6mm tweeter (flat diaphragm) per earbud | 11mm ceramic dynamic driver |
| Frequency Response | 20Hz – 40kHz (with LHDC) | — |
| Active Noise Cancellation | Adaptive ANC up to 55dB, real-time adjustment, Transparency Mode | Up to 45dB ANC |
| Microphones | 3 per earbud (feed-forward, talk, feed-back) with AI clear calls | Three microphones per earbud |
| Audio Features | Dual DACs, Hi-Res Audio, OnePlus 3D Audio with head tracking, Golden Sound personalization, BassWave, Sound Master EQ | 24-bit Hi-Res Audio |
| Audio Codecs | — | LHDC 5.0, LDAC, AAC, SBC |
| Transparency / Ambient Mode | — | Yes |
Charging Case
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Case Type | Charging case | Charging case |
| Case Battery Life | Included in the total battery-life figures above | Included in the total battery-life figures above |
| Case Charging | USB-C | USB-C |
| Case Charging Port | USB-C | USB-C |
| Case Weight | : 40g | 51.9g |
| Case Features | Protective charging case | Protective charging case |
Design & Controls
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Controls | Touch: swipe for volume, taps for play/pause/track, long-press for ANC toggle | Touch controls for playback, calls and listening modes |
| Water & Dust Resistance | IP55 (earbuds) | IP54 earbuds; IP55 case |
What's in the Box
| Specification | OnePlus Buds 4 | CMF Ear (R) B171 2024 |
|---|---|---|
| Headphones / Earbuds | Buds 4 earbuds | Ear (2024) (B171) earbuds |
| Charging Case | Charging case | Charging case |
| Charging Cable | USB-C charging cable | USB-C charging cable |
| Audio Cable | N/A - true wireless design | N/A - true wireless design |
| Ear Tips / Accessories | Ear tips/accessories supplied for the product design | Ear tips/accessories supplied for the product design |
| Documentation | Quick start and safety documentation | Quick start and safety documentation |