vs
4.8Noise control & calls4.8
4.9Battery3.7
Why is Ultra Open Earbuds better than Pi7 S2?
- Battery life7 h vs 5 h+40%
- Total with charging case27 h vs 21 h+29%
- Bluetooth version5.3 vs 5+6%
Why is Pi7 S2 better than Ultra Open Earbuds?
Pi7 S2 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Open-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 9.2 mm |
| Lowest frequency | — | 10 Hz |
| Highest frequency | — | 20,000 Hz |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | No | No |
| Transparency / ambient mode | Yes | Yes |
| Battery & charging | ||
| Battery life | 7 h | 5 h |
| Total with charging case | 27 h | 21 h |
| Charging time | 1 h | 1 h |
| Quick charge (claimed) | — | 15 min → 2 h |
| Fast charging support | — | Yes |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5 |
| Bluetooth codecs | aptX Adaptive, SBC | aptX Adaptive, aptX, AAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | Yes | Yes |
| LDAC | No | No |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | Yes |
| Low-latency game mode | — | Yes |
| Smart & streaming | ||
| Voice assistant | — | Google Assistant, Siri |
| Design & build | ||
| Earbud weight (each) | — | 7 g |
| Protection rating | IPX4 | IP54 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | — | 5 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
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