1.microscope fluorescer lamp 2. microscope ring lamp 3. power:8 W Microscope Fluorescent lamp Microscope ring lampCompact structure, nice looking, low heat ... retarding.3. Using high quality electronic component, because of the ring design, illumination section have no shadow.4. The maximal joint ... 8W. Input voltage: 110V/220V/240V, you can choose. microscope ring lamp fluorescer lamp