HX-1 model fluorescent ring lamp Performance: integrative design, use simply, the luminous of 8W is on an equality with the 40W electronic lamp, electricity conservancy, only as one fifth of the electronic lamp, less heat radiation, only as one third of the electronic lamp, Which both in excellent quality and reasonable price, it has been widely used in stereomicroscope. Specification 1.power:8W 2.color-temperature:6400K 3.available voltage:110/AC or 220/AC(r book) 4.maximum connecting caliber:60mm