The Mercury Vapor Vapor Bulb Mega-Ray is a 70-watt UV vapor bulb designed for reptile supplies. Made by the brand Mega-Ray in the United States, this bulb is known for being the smallest UV vapor bulb on the market. It provides the necessary UV light for reptiles to absorb and process calcium, promoting healthy bone growth and overall well-being. Perfect for pet owners looking to ensure their reptiles receive the proper UV lighting in a compact and efficient package.