A.532nm: epidermal pigmentation. Red, coffee, and brown. Such as the freckles, coffee spot, epidermal melasma B. 1320nm: skin rejuvenation whitening, shrinking pore, removing acne and blackhead C. 1064nm: treatment of tattoo removal, eyeliner, eye brow and dermal pigmentation, black, blue and cyan. Such as nevus of ota, hori nevus and striae gravidrum. Dimensions(w*h*l) 16*24*30cm Weight 13kg