This is a true 365nm UV keychain flashlight!! Don't be fooled by fakes on Amazon or Ebay. This really is 365nm.
Actually works very well up close even in a bright room in daylight. If you have a piece of Yooperlites jewelry or want to show off your Yooperlites but can't carry a big flashlight, then this light is the ticket!
Comes loaded with batteries and can be replaced.