About R1: R1 is a good entry-level smartwatch that can meet many basic needs of users. It has a 1.47 inch screen and offers plenty of clarity. (Screen Resolution: 170*320) Thanks to the latest buttonless design, you can illuminate the screen of the watch by touching the screen or rotating the clock. About health: R1 can monitor your health status 24/7 and calculate your daily steps and calories burned. And it syncs heart rate monitoring, blood oxygen and sleep data with the watch app and analyze your sleep quality, which can be very helpful for many people with poor sleep quality. (*Although it cannot replace professional medical equipment, the data repeatedly tested by the watch is still reliable.) A good sports partner: the watch automatically records your daily “steps”, “calories”, training distance and more. It supports 24 sports modes and there are also functions such as timer and stopwatch to assist you in your workout. Like almost all non-GPS smartwatches, this watch counts your steps based on your arm movements. So when you swing your arms like you usually do when running, the watch can count your steps more accurately. Easy to use: The watch is compatible with mobile operating systems via Android 6.0 or iOS 9.0, which is compatible with more than 99% of smartphones on the market. It is equipped with a 180mAh battery, the watch can work for 5 days and the standby time can be up to 10 days after 2 hours charging.