romote combination of protein and bone collagen, activate the skin, tighten the loosen skin. Effectively inhibit acne bacillus and improve red spot, oily skin and heavy sensitive skin, shirk pore, remove acne. Using the specific 415nm blue light in the visible light to kill the bacteria in the skin and pores. Loose skin tightening, pores shrinking, eliminate acne bacteria, it has great effect on oily skin, severe allergic skin and red spots. Description: Model: KD-7910 Voltage: DC 1.5V Current: 036A Power: 0.9W Stalls:1 file Battery:1*AA Battery(not include)