Overall, i am very satisfied with my purchase. I achieved it in 8 days,and there are also three watch straps, the steel straps and leather are very beautiful,many excellent features, including precise gps motion tracking and blood sugar measurement, nfc, compass, altimeter, barometer, heart rate, blood oxygen, blood pressure are all very accurate, swimming mode, making and answering phone calls, voice assistant, etc. , as well as ultra high-definition large screen, very smooth, definitely worth recommending in terms of price.