OK46 Digital Microscope LED Ring Light ,USB 5V LED,light Illuminator Adjustable Focus Lamp Source for Monocular Binocular Microscope Model : OK46 Dimmable LED Microscope Lamp Light source: 31pcs led ring lights, the brightness is adjustable. Input voltage:Standard USB DC 5V, Color temperature: 5500k-6500k Power consumption:4-6W Light intensity adjustment:0-100% Installation interface: M42*0.75 Ta:-20~+40℃ Package includes: 1* microscope led ring light 1* adaptor