Each ultraviolet, long wave black light is on a handy key chain. The light is 1-3/4" long and has a silver, cylinder-shaped, strong and durable metal housing. Easily turn on and off with a handy button. Each long-life, low power consumption light comes loaded with new batteries and also includes 4 FREE extra batteries.

ALSO FREE WITH YOUR PURCHASE: 2 ADDITIONAL FREE GIFTS; ONE FLUORESCENT VASELINE GLASS MARBLE and an informative flier about black light testing! The marble is given to help you learn the principles of fluorescence and to see and learn how UV will fluoresce glass that has depleted uranium salts as its coloring agent as well as being an invaluable aid to the collector of rocks, minerals, fossils and gems.

I was please at this comment from a collector: "I'll recommend this product to my friends; beats the heck out of the cell phone sized one I currently use at the rock shows.

Here's another enthusiastic feedback: "Sweet field tool; a must have for rock hounds. TYVM. AAA+"

JC of Rockford wrote, ""The LED black light is the nicest light I've ever had! I'm 64 years old and have been collecting minerals since I was about 12. I've had several types of lights. The first one was incandescent long wave & most recently a hand-held neon tube light. Yours out performs them all! I've never seen such brilliance from my fluorescent minerals. I also buy & sell antiques and collectibles. I can't wait to have an extra one and a couple to give as gifts. Thank you!"

Better than the fluorescent glass tube type light; this will not break if dropped and the LED has 100,000 hours life. IT IS WATER RESISTANT SO IT WORKS WELL EVEN IN THE RAIN!

MINERALS, GEMS AND DIAMONDS. Looking for Diamonds, Gems & Minerals? Take your UV Light with and check for the fluorescence of minerals, precious and semi-precious stones before buying. A great help at sales, estate and garage sales and small enough to be held in the palm of your hand without other shoppers being aware of what you are doing! There are over 270 Minerals that react or fluoresce under UV Light; a few are: Tugtupite, Wollastonite, Esperite, Hardystonite, Clinohedrite, Calcite, Rubies, Sapphires, Willemite, Zircon, Adamite, Halite, Aragonite, Sodalite, Fluorite, Scapolite, Opal, Diopside. UV Light is also used to check the fluorescence of Diamonds in order to determine if they are fake or genuine, or to check their irradiation process (natural or artificial). Use it to find leaks, minerals, insects, stains, for antiques and collectibles! - identify Marbles, damage or repairs to Bisque dolls, Flint, EAPG, pattern glass, Vaseline Glass, Carnival Glass, and glass containing Uranium Dioxide salts, most Depression Glass, mineral and rock specimens, gemstones (tell genuine from those irradiated to change color), paper, posters, stamps, other ephemera, bone, ivory, textiles, currency, travelers checks, AND PET STAINS, molds, semen and probably other things you'd rather not know! Detect glue, repairs, chips, cracks, and replacements on antiques and collectibles. Especially valuable to identify "THE MAGIC GLASS" - VASELINE - as well as Custard Glass and Burmese glass which may contain the depleted uranium salts which give the "magic glow." FIND LEAKS, MINERALS, INSECTS.