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About 2 weeks using "Nokia Sleep" which can confirm the sleeping time automatically by checking the smartphone Sleep cycle analysis · Tracking heart rate · Snore detection · IFTTT cooperated review - GIGAZINE
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Amazon.co.jp: Withings Sleep - Sleep Tracking Pad Under The Mattress with Sleep Cycle Analysis, Sleep Score & Sleep Sensor to Control Light, Music & Room Temperature, Breathing Disturbances - Compatible with Alexa
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