vs
7.7Battery8.6
8.3Build & features7.0
Why is LIVE Buds 4 better than OpenFit 2+ T921?
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · OpenFit 2+ T921: No
- LDACYes · OpenFit 2+ T921: No
- Earbud weight (each)4.8 g vs 9.4 g+96%
- Bluetooth version6 vs 5.4+11%
Why is OpenFit 2+ T921 better than LIVE Buds 4?
- Battery life10 h vs 11 h+10%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Open-ear |
| Ear cup design | — | Open-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 10 mm | — |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 40,000 Hz | — |
| Impedance | 16 Ω | — |
| Sensitivity | 106 dB | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 10 h | 11 h |
| Battery life with ANC | 8 h | — |
| Charging time | 2 h | — |
| Wireless charging (case) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 6 | 5.4 |
| Bluetooth codecs | LDAC, LC3, AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | No | No |
| LDAC | Yes | No |
| Multipoint (two devices) | Yes | Yes |
| LE Audio | Yes | — |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 4.8 g | 9.4 g |
| Protection rating | IP55 | IP55 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Colours | — | OpenFit 2+ Black, OpenFit 2+ Grey, OpenFit 2+ Purple |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
