Very good i'm impressed bright adjustable light awesome product buy it came well packaged and in reasonable time.
The light output seems a bit low, but I the microscope I bought this light for has not arrived yet. There are lots of variants of ring lights and some have more power. My light came with a 12V 1A adapter which I opened and it seems fairly well built. The seller responds promplty to questions. and told me I bought a 3W light and suggests other versions for more light. If necassary I will modify my ring ligth a bit to improve output power (It only consumes 2.1W at max brightness). But I will first wait for my microscope to arrive. The light is easy to open (single screw under sticker) and with a 12V 1A adapter there is plenty of room for experimenting.