ULTRAFIRE Blue Light Flashlight 470nm Powerful 3 LED Blue Flashlight, Single Mode 256 Yard Blue Light for Night Fishing Hunting Outdoor Activities, H-B3 (Battery Not Include)

First, this is not ultraviolet. Blue and Ultraviolet are not the same so complaining that it doesn't help with detecting blood or urine is just not understanding things. Blue light is blue light, ultraviolet iis ultraviolet simple as that. Blue vs Violet, get it? Ultrafire does make an ultraviolet light so if that is what you need get that but be aware that ultraviolet lights aren't designed to help you see things with normal vision and for illuminating most objects. Also, if you don't know but should take care to find out, very strong UV lights can quickly damage your eyes and skin and running around using them as cool flashlight is harmful. It takes very little exposure to strong UV to damage your eyes permanently, there is no fixing it. Now to these flashlights. They are really good for the price point. Being non-adjustable they do have a very bright center spot and then a halo of larger area. For an easy use light, they work well and are super bright with long range. I have the red and green and now blue versions of this light and they all work equally well. They do use up batteries pretty quick, you get about an hour so carry spares. Even batteries like EBC rated very high are depleted quickly, that is the price you pay for bight lights, there is no free lunch. A bright light, no matter how efficient will drain batteries quick. The only way around that is larger capacity batteries and given the size allowance there is only so much battery you can put into this light. I really like the dispersal area around the center higher intensity spot. Checking on things around the property doesn't have me changing between flood and spot, the balance between them in the illumination is really good. The Red is best for using it to avoid impacting your night vision. The green is great for seeing animals and it doesn't scare them off. The Blue works best if you are checking water ways like ponds, lakes and so on. Each has it's best purpose. A word about using a blue light to simulate official emergency lights (same with red). Doing so is illegal and sooner or later you will find that someone will catch you and then you'll have some significant events in your life, don't play around. I'm sold on Ultrafire lights, for less than many others they offer a very good light that although basic, provides great illumination and durability. A note to the maker - make a flashlight on this format (the larger 3 led head) in Yellow. They'll sell like crazy.

Needs special batteries, but other than that, it's a good light. It acts like a black light to see stains, and it treats fungus or rashes. Also great to find scorpions, if you are a desert hiker. The batteries and charger weren't that much extra, but make sure you get the right ones.

This only comes with the Flashlight, Battery is Not Included. It's supposed to be powered by a 18650 3.7V battery. That being said you can use two CR123A as well. Which is available at any local hardware store (or amazon), and offers better performance. A fully charged 18650 will get you around 15 minutes of ~280 Lumens before dropping off to ~170 lumens for the remaining 2 hours of battery life. Two CR123A had me at ~280 Lumens for 1 hour, dropping to ~200 for the remaining 3 hours before dimming off. Primary CR123 cells have 1.5 to almost 2x the capacity of rechargeable 123s (or 18650) depending on brand. I recommend this flashlight for those who plan on using for security purposes, hobbyist lookin for radium glass, or fisherman trying to get eyes on dusk/night time catch.

This is awesome! Very good and strong light. Works fine for my hobbies. Well build!

have had mine for a year now and works great. uses standard 18650 batteries so long lasting. i use mine for my reef tank to check on my corals at night i also use it at coral club meets and coral shows to check out the coral colors and it works great very bright at least 3x brighter than other flashlights ive seen other people use for coral.

This flashlight takes an unusual, rechargeable battery. It does not come with said battery. I had no idea and i wish i read reviews better... but its a flashlight!

Super strong durable blue light. I use this for my salt water coral fish tank. It’s super easy to use and the size and. Strength of the light is perfect

I bought this light for the antimicrobial skin benefits of 470nm blue light like acne and eczema reduction. I'm not convinced this light is actually 470nm as it is a deeper blue color and caused a red, sunburn style rash on my leg after treating an eczema patch. This makes me think that the light is actually a shorter wavelength, closer to the damaging ultraviolet side of the spectrum (although not super close to ultraviolet). So for skin... This torch gets 0 out of 5 stars! If you just want a sturdy, deep blue torch for a reason besides skincare, this one is nice but gets hot and doesn't last super long so buy two batteries and a charger.

It’s great for camping etc lights up everything well .