I always xiaomi band wether is HRX Or Mi Band 2 Or Mi Band 3 Now I m using mi band 3, I like its features I used it daily morning to Evening and at the time of Sleeping for Sleep Deepness Accuracy, I also used it at mornings for Exercises, best band I got it at 1799 from amazon, its worth I love its accuracy compared to another band, Its Not color display but ok what you expected 1799, and heart rate sensor is also accurate, Best Xiaomi Mi Band 3.
Thanks