The 144 LED ring light is designed especially for stereo microscopes and is an excellent companion to various kinds of microscopes and cameras It offers an optimum amount of light to the microscope or camera when additional light sources are required or there is not enough light Inspection and quality control are no longer a problem to view defects and overcome visibility problems related The device is safe to protect the user and the equipment from mild to severe electrostatic electricity Adjustable brightness for flexibility to suit any job and consistent lighting for object illumination,Adjustable screws to fix the light onto the microscope,Low temperature to maximize the user's comfort and operation, even for a long period Colour:As Shown Material:rubber Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. voltage: AC110V-240V Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * LED Ring Light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.