Good79/100
- Precise heart rate measurement
- Good sleep analysis
- Very scratch resistant
- Only fully usable with a plan
- No extra functions such as alarm clock
The Oura Ring 4 Ceramic differs from the conventional Oura Ring 4 primarily in its design. In shiny ceramic, it looks even more like a piece of jewellery. The material also proved to be very scratch-resistant when tested. The feature repertoire in the sports and health area is very large and scores points with good automatic training recognition and precise heart rate measurement, among other things...