Quark QK16L MKIII
Nothing lasts this long without being the best. The first Quark was launched in 2009. We don't release a new light every 5 minutes, because we spent the last 14 years making this one better.
1x16650 |
Nichia 319A |
650 |
0.8 |
1.5 hrs |
160 hrs |
4000K @ 90+ |
The classic Quark, modernized: It was a huge responsibility to take something so good and improve upon it, but that’s just what we’ve done. When I took over the Foursevens brand from David in 2018, this Quark project quickly became all-consuming. How to take my 10 years of experience designing high-end custom flashlights and combine them with the decade David spent reiterating and refining the brand’s flagship? The end result is the Quark MKIII, the best Quark yet, and I’m thrilled to have the opportunity to get one into your hands.
The Quark was the first commercially produced "high output" LED flashlight on the market. When the Quark flashlight hit the scene some 10 years ago, it completely shattered the mold and ushered in the era of modern EDC (Every Day Carry) flashlights. It put the Foursevens brand (and founder David Chow) on the map as an innovation leader in the world of EDC gear and spawned a new flashlight form factor that other manufacturers were quick to imitate.
Since then, the Quark has continuously evolved and the MKIII is intended to continue that legacy. I like to think the Quark is the Porsche 911 of flashlights: some things are so good they don’t need to be re-invented, they just need to be refined.
BATTERY WARNING: The QUARK QK16L MKIII will accept 2xCR123 or 2xRCR123 batteries. However, we STRONGLY ADVISE AGAINST THEIR USE. Catastrophic failure can occur when one of the two cells is not functioning correctly, causing thermal runaway in the other cell. There is a significant risk of fire and/or explosion when using two cells.
- Quark QK16L Flashlight
- Foursevens 16650 battery
- Tailstand Cap
- 2 Spare O-rings
- Instruction Manual
Operating your Quark is simple:
- Make sure that the battery is inserted with the positive side (+) toward the head.
- To turn it on press or click the tailcap button. A press allows momentary activation of the light.
- A quick off/on cycle changes modes
- Two very quick off/on cycles activates burst mode
- Enter configuration mode with 10 on/off cycles in less than 3 seconds: The light will begin to blink a number of times corresponding to the selected configuration. For example if you are in Config. 3: 3 blinks, pause, 3 blinks. If there is no input for 5 seconds the light will exit configuration mode.
- Turn the light off for 5 seconds to save the current configuration to memory
All Quarks are initially set to Configuration 3 with Medium/High/Burst. They can be reconfigured as often as you'd like.
Here are the possible configurations:
- Config. 1: High - (Burst 100%)
- Config. 2: Max (100%) - Strobe
- Config. 3: Medium - High - (Burst)
- Config. 4: Low - Medium - High - (Burst)
- Config. 5: High - Medium - Low - (Burst)
- Config. 6: Low - Med - High - Strobe - SOS - Beacon - (Burst)
Brightness Levels
- Low (Moonlight): 0.8 lumens, 160 hrs
- Medium: 70 lumens, 16 hrs
- High 350 lumens 1.75 hrs
- Max/Burst 650 lumens, 1.5 hrs (30 seconds burst, then steps down to high)
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LED TypeNichia 319A (4000K / 90+ CRI)
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battery typeFoursevens 16650 battery (2200mAh - 4.4A - protected Li-Ion)
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Weight3.2 oz (with battery)
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DimensionsLength: 4.5" / Diameter: 0.88"
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Voltage Range2.8V-4.2V
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Beam Distance170m
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Body MaterialsType-III hard-anodized 6061-T6 aluminum
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Window GlassOptical grade glass (2 side AR coated)
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Water ResistanceIPX8 (1m)
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Where it's Made