All-Day Health Monitor: The Runlio fitness trackers monitor heart rate and blood oxygen 24/7. Track sleep quality in the app, including deep sleep, wake time, and restlessness. Data helps promote a healthy lifestyle. (Note: Data is for reference only.) 25 Workout Modes Tracker: This fitness tracker watch for women men tracks your workouts more accurately and efficiently every way, which helps you to keep you stay motivated. The smart watch can also accurately record your steps, calories, distance and detect your activity status in real time. Sleep Tracker & Smart Notification: The smart watch pedometer reminder helps you to get the incoming calls, text, SNS, so that you won't miss any important calls or messages. You also can set the sedentary, your drinking water reminder and the women's menstrual period. Personalized Watch Faces: You can quickly switch your watch face from classic to modern or go for something totally unique with your own photo to match your outfit. Runlio fitness watch could be the best gift for you and those you loved. Compatibility & Long Battery Life: This smart watch is compatible with IOS 9.0 and above, Android 4.4 and above smartphones. Runlio fitness tracker watch gives 5-7 days of working time (varies due to frequency of use). Fitness Trackers