- Data protection good
- Heart rate measurement accurate
- Reliable charging process
- No extra functions
- Runtime quite short
- App somewhat overloaded
The Helio Ring from Amazfit has one of the shortest runtimes in the test field and needs to be refuelled after two days. However, there are only a few extras that could drain the battery. Nevertheless, the heart rate measurement is accurate. The app offers a detailed analysis, but is confusing. In terms of data protection, the manufacturer comes out on top in the test field.