Watson microscope lamp with transformer. Fully working, as you can see from the pictures, with some cosmetic wear to the transformer housing. This model does not come with an iris but the beam of light is intensified by rotating the end of the light housing. Please note the outside cable at the rear of the transformer has been split at some time, this does not seem to effect it use but as is always the case with electrics you may wish to consider getting this checked by a competent electrician.