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
