1.workmanship:

a.Diamond cutting, more modern technology style
2. Function:
a. button adjustment, simple operation
b. Numerical control display, long press "+" "-" the screen will quickly change the number display
c. The power display is more intuitive: green, blue, yellow, red four colors respectively represent 100%, 60%, 30%, 15% power
d.1900mah large capacity battery, sustainable operation for 5-8h
e. The battery is removable and the replacement cost is low
f. Direct drive system, strong needling force, full secant line, fast color, more uniform