What is the UV Matlite Mini? The UVMatlite was designed to provide families with a reliable and reusable light source that does not rely on batteries, bulbs, electricity or fuels of any kind. The UVMatlite contains enhanced glow-in-the-dark crystals that absorb any light to recharge. Use the UVMatlites as night light for your Home, RV, Tent, Camper, or Boat. When fully charged it will provide 10 hours of a night light illumination in a dark environment. Use it as a night light on your night stand, in the bathroom, The UVMatlites also make finding any items in the dark easy! All our products work best when your eyes are fully adjusted to the dark.