This Black Light is really cool! The flashlight also comes with UV Protective Safety Sunglasses. My 10 year old son has to show everybody who comes over what it does! It is a very powerful flashlight. The flashlight is made very well and is also very durable. You are able to see things you may not want to see though =). It is amazing all the things you can see with this black light flashlight. The flashlight is made very well and is also very durable. It really helps if you want to make sure a certain area is clean or if you got it cleaned. A great example would be taking it to hotels to see what the naked eye can’t see. You are able to see some things without the glasses but when you put the glasses on you can see so much more. The Black light has 100 small 395NM UV LED lamps. The beam illuminates a circular area of about 2 feet in diameter at a distance of 7 feet. The flashlight uses 6 AA batteries, they are not included.