EMAY Sleep Oxygen Monitor

EMAY Bluetooth Oxygen Tracker offers a smart & reliable way to track your blood oxygen saturation levels and pulse rate continuously. With built-in memory, the monitor works independently without requiring a smartphone at its side, freeing you from the confines during sleep. Records oxygen EVERY SECOND without interval, unlike other Bluetooth oxygen trackers that records at 10 second or longer intervals which could miss important events. Use the intelligent app to transfer the data easily after the recording is finished. Obtain professional and comprehensive TREND REPORT the device can keep up to 40 hours of data. That means you can record 8 hours per night, 5 nights a week. The screen will automatically go to sleep also so that you won't be interrupted by its light at night - just stop exercising for 10 seconds and avoid the direct sunlight before using it for measurement & tracking! For fitness, all you need to do is stop exercising (running, hiking, climbing, walking, etc.) For ten seconds before wearing it during sport/exercise Reference only, not for medical use.