Read this and decide for yourself if it is accurate enough for you: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6095823/ https://www.ncbi.nlm.nih.gov/pmc/arti

Read this and decide for yourself if it is accurate enough for you: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6095823/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6095823/ Study conclusions: "Multi-sensor sleep trackers, such as the ŌURA ringhave the potential for detecting outcomes beyond binary sleep/wake using sources of informationin additionto motion. While these first results could be viewed as promising, future development and validation is needed."