【All-Day Heart Rate & Blood Oxygen Monitor】 UMIDIGI UFit smart watch can monitor the heart rate all day and measure the oxygen saturation in the blood (SpO2), detecting the value of oxygen in the blood in any time to understand the changes in your physical state (Do not use as a basis for diagnosis or medical treatment). 【Fitness Traker & Sleep Monitor】Built-in 9 sport modes,walking,running,riding,spinning, fitness,yoga,treadmill etc. With sleep monitor function, our smartwatch can monitor your light sleep, deep sleep and awake time, you will get better know of your sleep status and quality. 【5 ATM Waterproof &Full Touch Screen】 UFit fitness watch is water resistant up to 5ATM and can also be worn while swimming (Note: do not use in water more than 38 ° C, such as showers, saunas, etc.), With full touch screen , 3-level Adjustable Brightness, 4-different watch face, more easy to operate.