Samsung launched the Galaxy Watch 5 series in August last year. It arrived with an infrared sensor for skin temperature measurement. Now the South Korean brand is rolling out an update that introduces a new feature on the Watch 5 and Watch 5 Pro models. The feature enables skin temperature-based menstrual cycle tracking for women. 

Earlier in February this year, Samsung partnered with Natural Cycles to bring the latest feature for its Galaxy Watch 5 series. Now, after getting regulatory approvals, the new feature is rolling out to all Watch 5 series models in South Korea, the US, UK, and 29 other European countries including Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland. The temperature-based menstrual cycle tracking feature is been progressively released via Samsung Health app updates. 

The new feature update enables accurate menstrual cycle tracking by utilizing the infrared temperature sensor on the Galaxy Watch 5 series. Users had to manually track menstrual cycles until now. Samsung explains that basal body temperature (BBT) varies by menstrual phase and it needs to be measured immediately after waking up. This can be inconvenient and also forgotten. Since the Galaxy Watch 5 series is capable of tracking sleep and its infrared temperature sensor, the new cycle tracking feature can work automatically. 

The Samsung Galaxy Watch 5 series will also be able to track ovulation and predict the beginning of the user’s next period by adding their own calendar-based cycle tracking entries. Samsung says that this data is securely encrypted and stored on the device. To use these enhanced features, users need to update the Samsung Health app to the latest version, look for Predict period with skin temp’ option in the settings and enable it. Additionally, the cycle tracking feature will also evaluate self-reported symptoms and provide relevant suggestions such as relaxation techniques. 

Samsung warns that if a user takes hormonal birth control or is undergoing treatment, the newly updated feature will not be useful for tracking ovulation. Predictions may also vary depending on how the usage of the Galaxy Watch 5 by the user. 

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