Check the listing for details. Premium 144 LED Bulbs Microscope Ring Light Illuminator Lamp US Plug Durable. Condition: New. Listed at 22.99 USD. Product Description: 100% brand new and high quality Shell material: plastic Color: black / white Light color: white Light source: LED Led quantity: 144Led Input voltage:AC 100~240V,50~60Hz Output voltage: DC12V Output power: ＜ 4W Plug type: US plug Brightness: 30000LX~40000LX(when the working distance is 800mm) Adjustable brightness range: 0~100% Working distance: 50~250mm Interface size: Φ60.5mm Lampshade:full transparent Feature: -Variable intensity control,intense and focused shadow-free illumination. -It is designed especially for stereo microscope, and is an excellent companion with high precision to various kinds of microscopes. -It can offer an optimum amount of lights to the microscope when additional light sources are required or there was not enough light! Practical and durable. Package included: 1PC x Ring light(US Plug) Set On Nov-30-21 at 23:37:42 PST, seller added the following information: