Chan, F. 3 I would say this product is mainly for heart rate & App notification.For step counting and blood pressure, I recommend using other devices.Step counting: I wore the watch before sleep, and the next morning displayed ~80 steps increment during my bedtime.Blood pressure, I have BP around a certain number but the measurement always reports a "healthy" result. Another person wore the watch and measure the BP, the result is also "healthy".Oxygen level: I don't care about that number and I won't trust that number as the above measurement lower the credibility of this watch in general.Sleep Monitor: If you put the watch aside without charging, the watch might consider you are sleeping. Not that smart.Brand: I couldn't find the company profile anywhere.Application: China-based company.