Spot Puva Narrow band UVB with shutter is Simple and efective unit use in the treatment of Vitiligo, Psoriasis, Leucoderma, Eczema and specially focus on small spot localized part of the bodyas Genital,Facial area, skin folds, arm pits, scalp, fingernail, limited spot.The Light weight unit ergonomically developed and easy to handle. Other special feature: Spot Puva NBUVB Spot_Puva with shutter & NBUVB Tube contains all the parameters to successfully treat for Psoriasis, Vitiligo (Commonly called Safed Daag / Fulveri / White Patches), Leucoderma, Eczema and other skin diseases.Spot Puva can be adjustable depending on area of lesions and easy to handle and hygienic to use.The device works in direct power source of 230V ac input.311. Treatment can be as little as 4 minutes 3-4 times a week. Simply place it against the affected area to treat,and remember to wear the Google.Positive results have been seen in as little as one week,it depends on your severity.The bulbs are philips 311nm narrowband