20.04.2015 17:37 Uhr, Quelle: iPodlounge

News: Details of Apple Watch’s heart monitor, limitations released

An Apple support document shows how Apple Watch uses colored light to measure heart rate. By flashing green LED lights hundreds of times per second, the Apple Watch monitors how much blood is flowing through a users’ veins when paired with light-sensitive photodiodes. A different method using infrared light measures users’ heart rates every 10 minutes throughout the day, storing that information in the iOS 8 Health app. The watch will…

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