![Amazon.com: SAMSUNG Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US Version, SM-R860NZSAXAA, Silver : Electronics Amazon.com: SAMSUNG Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US Version, SM-R860NZSAXAA, Silver : Electronics](https://m.media-amazon.com/images/I/61dh16sj5+L.jpg)
Amazon.com: SAMSUNG Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US Version, SM-R860NZSAXAA, Silver : Electronics
![I got a smartwatch so I could see how badly I sleep. after wearing it all night it still thinks I haven't even went to bed. : r/mildlyinfuriating I got a smartwatch so I could see how badly I sleep. after wearing it all night it still thinks I haven't even went to bed. : r/mildlyinfuriating](https://preview.redd.it/i-got-a-smartwatch-so-i-could-see-how-badly-i-sleep-after-v0-z2q49mgtuqaa1.png?auto=webp&s=79a14e46bc60ce6deb2f3ca18903c1ab98eaa38f)
I got a smartwatch so I could see how badly I sleep. after wearing it all night it still thinks I haven't even went to bed. : r/mildlyinfuriating
![プレゼント サプライズ SAMSUNG Galaxy Watch 4 44mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US 並行輸入 - 通販 - www.flow-tech.ai プレゼント サプライズ SAMSUNG Galaxy Watch 4 44mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US 並行輸入 - 通販 - www.flow-tech.ai](https://m.media-amazon.com/images/I/41wE3ciUjFL._AC_.jpg)