Why is FD3 better than OpenSwim?
- Weight7 g vs 30 g4.3×
- Lowest frequency10 Hz vs 20 Hz2×
- Highest frequency40,000 Hz vs 20,000 Hz2×
Why is OpenSwim better than FD3?
OpenSwim has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Bone conduction |
| Ear cup design | Semi-open | — |
| Driver type | Dynamic | — |
| Lowest frequency | 10 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 20,000 Hz |
| Impedance | 32 Ω | 8 Ω |
| Sensitivity | 111 dB | 98 dB |
| Hi-Res Audio | Yes | — |
| Battery & charging | ||
| Battery life | — | 8 h |
| Battery capacity | — | 183 mAh |
| Charging time | — | 2 h |
| Connectivity | ||
| Wireless | No | No |
| Design & build | ||
| Weight | 7 g | 30 g |
| Protection rating | — | IP68 |
| Water resistance (IPx) | — | IPx8 |
| Dust protection (IP) | — | 6 |
| Colours | — | Black, Blue |
