M8s upgrade points: 1. The circular monophonic cable interface is changed to a type-c interface, which is a common charging cable for mobile phones, which is convenient for daily use and portability. 2. The corrugated treatment needle has the function of anti-backflow, and the machine is safer. 3. Upgraded battery capacity, larger screen LED smart display, intimate low-battery warning function, F logo when fully charged, and low-battery indicator light will flash slowly. There are also packaging upgrades
