Amazfit GTR 2e Smart Watch has everything that you need. This watch has a whole health care kit included in it, through this watch you can measure blood oxygen, sleep quality, and heart rate as well. you can customize the faces of this watch whenever you desire, it has more than 50+ Watch Faces. The best part is that in this watch you will get Built-in GPS as well, which is extremely useful. And its Amoled Display is readable in direct sunlight as well and it displays everything in high definition. This watch is super duper light in weight, you can wear it the whole day without feeling it on your wrist, it's not heavy like other watches. Overall, this Amazfit GTR 2e Smart Watch is the best.