vs
4.6Noise control & calls4.9
4.8Battery7.8
Why is Ultra Open Earbuds better than Liberty 4 NC?
- Charging time1 h vs 3 h3×
- aptXYes · Liberty 4 NC: No
Why is Liberty 4 NC better than Ultra Open Earbuds?
- Battery life7 h vs 10 h+43%
- Total with charging case27 h vs 50 h+85%
- LDACNo · Ultra Open Earbuds: Yes
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 11 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | — | 10 Ω |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | No |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | — | 6 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 7 h | 10 h |
| Total with charging case | 27 h | 50 h |
| Charging time | 1 h | 3 h |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | aptX Adaptive, SBC | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | Yes | No |
| LDAC | No | Yes |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | — | 5.2 g |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Colours | — | Velvet Black, Clear White, Navy Blue, Pastel Pink, Light Blue |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
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