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Klarus ST12 Flashlight - CREE XM-L2 LED - 900 Lumens - Uses 2 x CR123A or 1 x 18650

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Klarus ST12 LED Flashlight - 900 Lumens - CREE XM-L2 - Runs on 2x CR123A or 1x 18650 Batteries

Klarus ST12 LED Flashlight

Compact and Powerful

Next up in the ST series from Klarus, comes the ST12, a compact, lightweight, and powerful LED flashlight that is perfect for every-day-carry and outdoor use. Measuring in at just over five inches and constructed from aero-grade aluminum alloy, the ST12 is a pleasure to hold in hand, especially with its diamond-shape knurling, which gives a better grip. The ST12 is suitable for a multitude of scenarios, whether it be camping, hiking, hunting, or every-day-use, this powerful light

Lighting Technology


The powerful ST12 is fitted with a CREE XM-L2 LED, outputting a maximum of 900 lumens, with a beam distance of up to 212 meters. Accessing the five different output modes is done by the multi-functional side switch. Simply short press the side switch for on/off and long press to cycle between modes, such as the 900 lumen High mode, 400 lumen Mid mode, 80 lumen Low mode, 900 lumen Strobe mode, and finally the 404 SOS mode. The ST12 features an intelligent memory function, which allows the ST12 to return to the last mode used, so there are no surprises when you're in need of light.


Primary or Rechargeable Batteries

Powering the ST12 are either two Lithium CR123A batteries or a single Li-Ion rechargeable 18650 cell, giving you a maximum run time of up to 25 hours. To maximize battery power, the ST12 features a lock-out function that will prevent the light from accidentally activating in your pocket or bag. Also, being IPX-8 waterproof and impact resistant, you wont have to worry about damaging the batteries or the light, in the event the ST12 gets dropped in a puddle or it begins to rain.

  • Intelligent memory function memorizes user habits
  • Lock-out function prevents accidental activation
  • Toughened ultra-clear mineral glass with anti-reflective coating
  • Constructed from aero-grade aluminum alloy
  • HAIII military grade hard-anodized finish
  • Impact resistant to 1.5 meters
  • Waterproof in accordance with IPX-8 standards
  • Included accessories: lanyard, spare O-ring, and a keychain
  • LED: CREE XM-L2 (U2)
  • Battery: 2x CR123A or 1x 18650 (Batteries NOT included)
  • Output mode/Runtime:
    • High: 900 lumens / 2.5hrs
    • Mid: 400 lumens / 5hrs
    • Low: 80 lumens / 25hrs
    • Strobe: 900 lumens / 7.5hrs
    • SOS: 400 lumens / 11.2hrs
  • Max Beam Distance: 212 meters
  • Dimensions:
    • Length: 5.26" (133.7mm)
    • Bezel Diameter: 1.36" (34.5mm)
    • Body Diameter: 1" (25.4mm)
  • Weight: 4.75 oz (134.6g) (excluding batteries)
Runtime (Hours):-2.5525-
Output Modes:3+ Brightness Levels, SOS, Strobe
Compatible Batteries:1 x 18650, 2 x CR123A
Batteries Included:No
Included Accessories:Key Ring, Lanyard, Spare O-ring(s)
Flashlight Usage:Every Day Carry
Throw Distance (Max):212m
Switch Location:Body
Product Certifications:IPX-8
Warranty:Battery Junction 30-Day Warranty, Klarus 5 Year Warranty
Return Policy:Battery Junction Return Policy
Primary Material:Anodized Aluminum
Product Weight:4.75oz
Product Dimensions:5.26" (L) x 1.36" (Head Diameter)1" (Body Diameter)
Country of Origin:CN
6 Reviews
33% (2)
50% (3)
17% (1)
0% (0)
0% (0)
By Dennis
Mesquite, TX
Klarus ST12 Flashlight
April 12, 2017
Love this flashlight. It is bright and you can save on the battery with two lower beams. I have the older Klarus ST11 with the button on the butt of the flashlight to turn it on, and then a button close to the head to change beams. This ST12 is a improvement with the button to turn it on close to the head and No button on the butt. Thanks
By Jeff
Washington DC
Klarus ST12
January 1, 2017
Great EDC for teens to put in their vehicles or persons
ProsLike the lockout feature
By Ken
Tyler, TX
Nice light
July 26, 2016
Not a bad light and got it on sale so price was very good. Doesn't seem nearly as bright as my 960 lumen nitecore p16 and the nitecore has a better beam; however, it did cost more than the Klarus! All in all, a great light for the money. Use it as my carry light in my vehicle.
By keith
Coon Rapids, MN
Great little light
February 23, 2016
Lite weight solid construction. Bright focused beam with good throw distance. Nice cone of light to light up an area. Really like the lock out feature to prevent accidentally turning it on when not in use. The switch is solid. The only short fall is not having a micro USB port in order to charge the battery without removing it.
ProsBright light. Convenient size. Good beam distance. Solid.
ConsNo micro USB port to charge the battery
By pooneej
vineland, nj
Nice for the price
January 23, 2016
I actually got this on sale here. Price was right for my first "real" flashlight. I didnt want to spend too much but wanted to try something a little higher end than an ebay $5 "2000" lumen flashlight which I got a few months ago. I needed a light for morning runs when it's dark out. My ebay light was good but I wanted to see what these lights could do. This seemed perfect so I bought it. When I got it, I was pretty impressed with the build quality and packaging (for whatever packaging is worth).

I can tell you battery junction free shipping is great but uses DHL which is so slow. I'm in NJ so from CT, it went to MA, then to MD,etc. Took 1 week. UPS ground CT to NJ is 2 days.

So I finally get the light and got to try it this morning. Initial light up was incredible. WOW is all I could say when compared to my $5 ebay light. Intensely bright and decent spread. I ran with it on its highest setting. Awesome distance for a light this size.
BUT - - 15minutes into the run, it starts getting dimmer.. and dimmer... and dimmer. And I accidentally click on the switch which changes modes and doesnt have a great tactile feel (although I had gloves on). Its dark out, the light is dying and I cant really find the switch to change modes. For my purpose I'd like a backlit switch. Anyway - it's now about 40minutes into the run and my running buddy has my ebay light. It's still going great!!! Brighter and more spread than my new light. I got a new appreciation for that cheap ebay light this morning.

To me, this light is great. It just isnt perfect for what I need it for. Its going to be a nice light and I have no regrets with the purchase. I dont like battery junction free shipping DHL. Slow. Prices here are good and website/selection is nice.
Prosbuild quality price output is nice for size
Consruntime is terrible for me (i had it on high) switch is not great, accidentally switch modes unknowingly. cant find switch in dark. even with no gloves on cant feel for it easily (cold out so fingers kind of numb which may account for that but still - - )
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Klarus ST12 Flashlight - CREE XM-L2 LED - 900 Lumens - Uses 2 x CR123A or 1 x 18650

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