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Smart-Ringe im Test - Keiner siegt klar

Source: test.de

Fünf Smart-Ringe wurden getestet, keiner überzeugt in allen Bereichen.
Der Oura Ring 4 punktet mit Schlaf-Tracking, ist aber teuer.
Ultrahuman Ring Air ist günstiger, hat Schwächen bei der App.

Der Artikel testet aktuelle Smart-Ringe, die Fitness, Schlaf und Stress tracken, ohne aufdringlich wie Uhren zu sein. Er zeigt Vor- und Nachteile der Modelle und hilft bei der Kaufentscheidung. Solche Ringe boomen, weil sie diskret Gesundheitsdaten sammeln.