Best Blue Light Flashlights

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Blue light is helpful when conducting research or observations in dark rooms or at night. They are designed to help you see without interfering with the natural movements or structure of animals and substances. The best blue light flashlight is the WAYLLSHINE Scalable Blue LED flashlight. It has a long-range beam, three switch modes and doesn’t affect night vision. Here are a few other blue light flashlight options. 

Best overall blue light

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WAYLLSHINE Scalable Blue LED Flashlight

The best way to see in the dark

The WAYLLSHINE blue light flashlight zooms in on objects and shines brightly without being too strong. 

Pros:

  • Three light settings
  • Zoom feature 
  • Belt clip

Cons:

  • Can’t set light mode
  • Batteries not included

The WAYLLSHINE scalable blue LED flashlight has three different light settings including a strobe setting. There isn’t a way to set a specific mode. Instead, it cycles through each one as you turn the flashlight on and off. This flashlight features a zoom mode that brings objects closer from up to 150 yards away, and the beam isn’t too strong to hurt your eyes or others’ around you, but still strong enough for you to see clearly. This flashlight has a belt clip so you can keep it handy rather than needing to rummage around in a bag or your pocket to get to it. It only requires a single AA battery to use this flashlight. Unfortunately, it doesn’t come with one. 

Best value blue light

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SXGINBT UV LED Shortwave Flashlight

Two for the price of one

This duo pack includes both a compact blue light flashlight and a small blacklight flashlight. 

Pros:

  • Two flashlights
  • Compact design
  • Wrist strap included

Cons:

  • Not waterproof
  • Too small for some uses

This blue light flashlight comes with an ultraviolet black light flashlight, too, making it a good budget-friendly option. The blue light is small with a wrist strap, but will pick up pet urine stains, oil stains and help identify fraudulent documents, money, stamps, etc. The aluminum alloy casing makes it dent-resistant in case you drop it. It isn’t waterproof, though. And while it gives sufficient light, the flashlight’s small, compact size doesn’t make it the ideal pick for outdoor activities or nighttime nature observation adventures. The black light flashlight of this duo pack is even smaller than the blue light flashlight. Black light picks up fluorescent carcinogens in just about any object. This is helpful in determining the safety of products your family uses, or in conducting science experiments.  

Best long-range blue light

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UltraFire Wavelength Professional Blue Light

Shine far and wide

This blue light flashlight shines up to 256 yards away to help you see far ahead of yourself without a disturbing bright light. 

Pros:

  • Shines 256 yards
  • Dent resistant
  • Waterproof

Cons:

  • Expensive
  • No hands-free option

The UltraFire blue light flashlight shines up to 256 yards away with an angle that is 100-degree wide. This is a great tool for stargazing, night fishing, or observing wildlife in their natural habitat at night without disturbing them with a bright, traditional flashlight. The light beam is made up of 283 miniature lumens that can keep burning for 100,000 hours before burning out. The outside of the flashlight is made from high-grade aluminum and coated with a finish that helps resist dents and damage from being dropped and scratched. It is also waterproof enough to hold up in heavy rains. This blue light flashlight doesn’t have a strap, clip, or other means to keep the light more readily available than in your bag or pocket. It is also more expensive compared to other similar flashlights. 

Best blue light with zoom

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LUMENSHOOTER Multi-Color Tactical Flashlight

Look then look closer

This blue light flashlight by LUMENSHOOTER zooms in closer to the object to lighting up to make it easier to see details. 

Pros:

  • Zoom feature
  • Multicolored light beam
  • Belt clip

Cons:

  • Batteries are not included

This flashlight has several settings that change the color of the light beam to one of four colors, including blue light. Each one is very bright and illuminates objects far away. And if you still can’t see what you’re trying to hone in on, the LUMENSHOOTER tactical flashlight a zoom that brings the object in closer so you can see it better. This flashlight has a belt clip so you can carry it hands-free and yet grab it quickly when you need it.  There is a memory function. The last light setting you use for at least three seconds is remembered and is the color that will come on next time.  The light comes on and the light color changes by clicking the switch on the tail cap. It requires three AAA batteries in order to work. Batteries don’t come with this flashlight. 

Best keychain blue light

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LRI PBK Photon II Blue Beam Micro-Light Keychain

Always with you

The LRI blue beam flashlight is also a keychain with an easy to use clasp. The flashlight easily turns on and off when needed. 

Pros:

  • Strong enough to hold several keys
  • Easy on/off switch
  • Quick-release ring

Cons:

  • Not waterproof

This blue light flashlight is designed to fit on your key ring, so you always have it with you. The light beam isn’t very strong, nor does it shine far,  but it is enough to find small objects at night or identify fraudulent documents. You turn on and off this flashlight by tapping the small switch button. It’s powered with a small, Lithium-ion battery that can’t be recharged, but it can be replaced. Batteries are not included. The light is attached to a ring with an easy release clasp that you can add to your key ring, or use as your primary key ring. It’s strong enough to hold a few keys. The light is water-resistant, so it’s okay if it gets a little wet, like during a rainstorm. However, it will short out if it is submerged in water. 

Bottom line 

The WAYLLSHINE blue light flashlight has the features you need to observe nightlife without bothering them, or discovering minerals in rocks, or conducting science experiments in a dark room. The beam illuminates well and has a zoom feature to bring objects closer to you, but the blue light isn’t strong for blinding. The body of the flashlight includes a belt clip, so you can keep it close to you to gab quickly. It also has three light settings - low, high, and strobe. One setback is the flashlight doesn’t remember the setting you need. Instead, it cycles through each one as you turn the light on and off. This flashlight is handy for night activities, including night fishing. However, while it can handle a little rain, it isn’t waterproof, so it may short out with heavier rains, or if dropped into water. 

Nikki Johnston
Special Project Writer

Nikki writes for multiple Future Publishing brands covering topics from antivirus to kitchen appliances to SAS. She has over 15 years of research and writing experience, including eight years of testing and reviewing consumer products. Nikki earned bachelor’s degrees in both English and Political Science with a focus on empirical research. In her spare time, Nikki serves as a member of several school councils and volunteers for a local arts board.