UV Lamp 254nm/365nm 4W Portable UVC/UVA Shortwave Longwave Lab Batteries Included AI-0UV19

Product worked great and includes batteries and a charger

Upon opening and reading the instructions, I learned that the lamp should ideally be switched on for at least 15 min at a time otherwise frequent on/off will reduce the life of the lamp. I find this a bit of a dilemma since the batteries last for 2 hours, and I tend to frequently on/off the lamp for quick TLC check. I think this is unsuitable for my use so I sent it back and got a full refund with no issue.

Using the product to read TLC plates, works pretty well as long as surroundings are somewhat dark. Very useful. 365 a bit weak.

The light emitted is too dim to be of any use, even with brand new fully charged batteries.

This helped diagnose my child's ringworm on the side of his face. The long blacklight bar on the side is the correct wavelength to cause ringworm to glow green; it has to be this wavelength in order to detect ringworm, other blacklight wavelengths will not work. Doctor confirmed it was indeed ringworm.

The Long wave part of this light is ok, but the short wave works really well for the price. Photo is an Idaho Opal using this light under short wave (background was edited out)

It functions as it claims. For what you're paying for a shortwave UV lamp, you can't expect it to be designed perfectly. The battery compartment is a bit funky on closing but again it functions.

These are awesome for checking out fluorescence in rocks and minerals. Some you would never guess would fluoresce. However it’s poorly made and pieces tend to fall off as you’re installing batteries.