Why is OpenSwim better than SE215-EFS?
- Highest frequency20,000 Hz vs 17,500 Hz+14%
- Lowest frequency20 Hz vs 22 Hz+10%
Why is SE215-EFS better than OpenSwim?
SE215-EFS has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | Bone conduction | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Number of drivers | — | 1 |
| Lowest frequency | 20 Hz | 22 Hz |
| Highest frequency | 20,000 Hz | 17,500 Hz |
| Impedance | 8 Ω | 20 Ω |
| Sensitivity | 98 dB | 107 dB |
| Battery & charging | ||
| Battery life | 8 h | — |
| Battery capacity | 183 mAh | — |
| Charging time | 2 h | — |
| Connectivity | ||
| Wireless | No | No |
| 3.5 mm jack / AUX | — | Yes |
| Design & build | ||
| Weight | 30 g | 30 g |
| Protection rating | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Dust protection (IP) | 6 | — |
| Colours | Black, Blue | — |
