3 way switch allows daylight white LED light, near Long Wave UV, or non-lighted viewing. Special added UV LED outside the light ring for observing or grading Long Wave UV reaction in diamonds and other gemstones. (See this extra LED in the UV photo example)
Excellent 21mm wide optics for easy viewing. Batteries are typical button types, 1 extra set of three is supplied to buyer. Batteries are easily replaced, and there is a tool to assist in replacement included. Leather case and properly boxed.