vs
5.6Noise control & calls5.8
3.8Battery8.0
2.4Build & features9.5
Why is QuietComfort Ultra Earbuds (2nd Gen) better than Sport X20?
- Charging time1 h vs 3 h3×
- aptXYes · Sport X20: No
Why is Sport X20 better than QuietComfort Ultra Earbuds (2nd Gen)?
- Battery life6 h vs 12 h2×
- Total with charging case24 h vs 48 h2×
- Water resistance (IPx)IPx4 vs IPx82×
- Battery life with ANC4 h vs 7 h+75%
- Earbud weight (each)10 g vs 6.5 g+54%
- Microphones4 vs 6+50%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 11 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | — | 16 Ω |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | Yes | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | 4 | 6 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 6 h | 12 h |
| Battery life with ANC | 4 h | 7 h |
| Total with charging case | 24 h | 48 h |
| Charging time | 1 h | 3 h |
| Fast charging support | Yes | Yes |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | aptX | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | Yes | No |
| LDAC | No | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | Yes | — |
| Design & build | ||
| Earbud weight (each) | 10 g | 6.5 g |
| Protection rating | IPX4 | IP68 |
| Water resistance (IPx) | IPx4 | IPx8 |
| Dust protection (IP) | — | 6 |
| Colours | — | Black, White, Green |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
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