Captaintech Smart Watch

Go Higher with SpO2 Measurement Feeling worn out? Or adventuring up to higher altitudes? Be smart and use the watch to easily measure your blood-oxygen saturation in as quick as 25 seconds, to quickly understand your physical state. Follow Your Heart All Day Keep an eye on the most important muscle in your body. The watch can monitor your heart rate all day, and let you know if it becomes abnormally elevated. You can even check if you're working out in your goal heart rate zone. Dream Big, Dream Bip Follow your dreams through the light, deep and REM sleep stages. The can monitor your sleep quality8, so you can rest well enough to keep making the fitness gains you want.