4Sevens Quark 123 S2
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4Sevens Quark 123 S2

Overview / Main Features

Power: One CR123A Battery (0.9V~4.2V)

Output: Maximum - 175 ANSI lumens; Moonlight - 0.6 ANSI lumens

Runtime: Maximum - 1 hour; Moonlight - 701 hours

Strobe: Strobe, S.O.S., and Beacon flash modes


    • Powered by: 1 CR123A battery (included)
    • LED Emitter: Premium Cree XP-G S2
    • Voltage range: 0.9V ~ 4.2V
    • Dimensions
Length: 3.2 inches
Diameter: 0.86 inches
Weight: 1.4 ounces
  • 5 Current Regulated Output Levels
  • Convenient Clip (Note: The Quark 123 is the only Quark light on which the clip cannot be removed because of its small size.)
  • Flash modes: Strobe, SOS, Beacon
  • Square threads for lifetime smooth operation
  • Type III Hard Anodized finish
  • Flexible & secure finger grip accessory
  • Fully knurled
  • IPX-8 Waterproofing
  • Impact-resistant glass lens with Dual-coating - sapphire coating on the outside and anti-reflective coating on the inside for optimal efficiency and durability.
  • T-6061 Aircraft-grade Aluminum Body
  • Stands on Tail (candle mode)

Typical Output Levels and Runtimes + (LED drive current)

Moonlight: 0.6 lumens for 701 hours, (1ma)
Low: 4 lumens for 60 hours (10ma)
Medium: 19 lumens for 13 hours (50ma)
High: 83 lumens for 162 minutes (250ma)
Max: 174 lumens for 1 hour (700ma)
Strobe: 174 lumens for 1.6 hours
Beacon: 0-174 lumens pulse for 12 hours



Operating your Quark 123 is simple. Make sure its batteries are inserted with the positive side (+) toward the head. Ensure the bezel (the 'head' of the light) and tailcap are tightened, then depress the tailcap button fully so that it 'clicks' and the light turns on.

The two most commonly used modes are Max and Moonlight, the highest and lowest modes. To access Max, you simply tighten the bezel. To access Moonlight, you just loosen the bezel a half-turn. That's it.

You can also cycle through the Quark's other modes just as easily. Lightly depress the button momentarily (you don't need to 'click' it off) and the output will switch to the next mode. The mode sequence is determined by whether the bezel is tightened or loosened:

Loosened Bezel: Moonlight -> Low -> Medium -> High -> SOS -> Beacon

Tightened Bezel: Max -> Strobe

Once the Quark has been turned off for at least three seconds, it will revert to the first level of output in the sequence, either Moonlight or Max.



4Sevens warrants its products to be free from defects in materials and workmanship. We will repair or replace, at our option, without charge, any product or part which is found to be defective under normal use and service within 120 months from the date of purchase with proof of purchase. Such repair or replacement shall be the purchaser's sole and exclusive remedy under this warranty. This warranty does not cover normal maintenance and service and does not apply to any products or parts which have been subject to modification, misuse, abuse, negligence, accident, or improper maintenance or repair by anyone other than 4Sevens.

Please note: some pictures shown below use the tactical model (protruding tailcap).

  • Item #: FS.Q123-S2
  • Manufacturer: 4Sevens
  • Manufacturer's Product Number: FS.Q123-S2
  • Condition: New

4Sevens Quark 123 S2

Price: $55.00
Availability: Out-of-Stock
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