This is a handy photon device for all skin care. It is using the specific 415mm blue light in the visible light to kill the bacteria in the skin and pores. Blue light penetrates just beneath the surface to target acne causing bacteria. Red light goes deeper into the skin to reduce inflammation. Feature - Color: White. - Material: ABS. - Size: 13.5x1.5x1.5cm. - This is a handy photon device for all skin care. It is using the specific 415mm blue light in the visible light to kill the bacteria in the skin and pores. - Blue light penetrates just beneath the surface to target acne causing bacteria. Red light goes deeper into the skin to reduce inflammation. - The stability of the 42 degree heat and BIO micro electric current can effectively reduce the grease of pimples, scars and so that to accelerate the natural cure of skin problems. - Powered by 1 AAA battery(Not Included).