1.easy to use and effective:2 working step (turn on power button ,then to click launch button )indicator flash device is working 2.match for personal and beauty spa (Affordable solution for minor skin imperfections) 3.don't need to touch skin operation and safely :2 replaceable thick and thin needles ,(for small skin tag and moles dark spot repair it);3 pieces Ozone replaceable tips use for anti inflammatory 4.mode :freckle /Ozone 2 in 1,click M to change working mode,9levels adjustable,click "+" or "-" to select the levels you want ,usually from low to higher operate it 5.automatic mode:short click power change auto mode then short click launch button ,indicator flash device is working ;click again working stop .Effortless and efficient.syi