Sun Lamps,enjoy sun in indoor. Standard Sun LampsPower:15w,20w,25w,30w,45w.UV-B rays have good physiology effect on human body ,they can cause photochemistry and photoelectricity in skin,and promoting healthy reaction in human body,UV-B rays even have good effect on organ, nerves system ,secretion system and cycle systerm of human body .enjoy sun in indoor. Standard Sun Lamps