EMAY Sleep Monitor provides a smart, reliable and affordable solution to track your O2 and heart rate CONTINUOUSLY. Not Just a O2 Meter It might look like a regular O2 meter, but believe me, the device is capable of much more than that. First, it is equipped with 40 hours storage, which means you can record O2 & HR data up to 8 hours per night, 5 nights a week, making it the best overnight & continuous oxygen monitor you can find. Once the memory is full, it's super easy to clear it in just one tap. Second, unlike other O2 tracker that records at a 10 second, 30 second or even one minute interval, we record second by second without interval, ensuring every single important event will be captured. Third, special & soft chamber design to clamp fingertip firmly, making sure the device stays on your finger comfortably over time and would not come off easily. We also provide elastic tape as accessary in the package for restless sleeper in case he/she might need extra help to stabilize the monitor better during night. Review & Share Your Data Conveniently Record First, Sync Later! The Emay app allows you to review and share your O2 & HR data unlimitedly. The good thing is that it doesn't require real-time connection to the app, which means you won't need a smartphone around while recording data, making things much easier: Just leave your phone in the living room, go to bed with the monitor on your finger, the next morning you will have the whole night's data. Sync it to the app whenever you like. Simple ! From here on the app, you will be able to review the granular O2/HR data, overnight report and CSV file, or even send them by email. Compatibilities: iPhone - iOS 8.2 or later (For iPhone 11 / 11Pro / 11Pro Max / XR / XS / XS Max / X / 8 / 8 Plus / 7 / 7 Plus / 6s / 6s Plus / 6 / SE / 5s / 5 / 5c / 4s) Android - Android 7.0 or later (For Samsung Galaxy & Note, Google Pixel, Huawei, LG, etc.) What You Can Get From the Overnight Report ? O2 trend graph Pulse rate trend graph Duration and percentage of O2 below the threshold Duration and percentage of PR below the threshold Max, Min & Avg Value of O2 and PR ODI 3% & ODI 4% index CSV file with granular data of O2 & PR (Every second) Export the report & CSV file, send them by email in just one tap with your finger. Notice: Intended for Sport, Aviation & Wellness Only, Not for Medical Use.