vs
5.5Battery3.3
5.9Build & features2.4
Why is Openpiece S TE-S1 better than HA-A3T?
- Battery life8 h vs 7 h+14%
- Earbud weight (each)4.2 g vs 10 g2.4×
- Total with charging case27 h vs 22 h+23%
- Charging time1.5 h vs 3 h2×
Why is HA-A3T better than Openpiece S TE-S1?
HA-A3T has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | — |
| Driver size | 10 mm | — |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | — | No |
| Battery & charging | ||
| Battery life | 8 h | 7 h |
| Total with charging case | 27 h | 22 h |
| Charging time | 1.5 h | 3 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.1 |
| Bluetooth codecs | AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | — |
| Design & build | ||
| Earbud weight (each) | 4.2 g | 10 g |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Features | ||
| Hands-free calls | Yes | — |





