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by vzaliva 2276 days ago
Read this and decide for yourself if it is accurate enough for you:

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."