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'''Preon P2''' - 2xAAA 7-mode clicky with XP-G LED. Has a pocket clip and matte finish (no knurling) and is available in black, blue, red, yellow, satin titanium, and titanium black (with titanium head and tail but black body). Regular operation cycles through 3, 26, and 120 ANSI lumens (59m throw), but if you cycle quickly through all the modes twice, you also get strobe, SOS, and high and low beacon modes. Parts are interchangeable with Preon 1, which allows use of a flat tail and using the light as a twisty. A warm white high CRI version is available in black or titanium black which has less output. Introduced in May 2012.
'''Preon P2''' - 2xAAA 7-mode clicky with XP-G LED. Has a pocket clip and matte finish (no knurling) and is available in black, blue, red, yellow, satin titanium, and titanium black (with titanium head and tail but black body). Regular operation cycles through 3, 26, and 120 ANSI lumens (59m throw), but if you cycle quickly through all the modes twice, you also get strobe, SOS, and high and low beacon modes. Parts are interchangeable with Preon 1, which allows use of a flat tail and using the light as a twisty. A warm white high CRI version is available in black or titanium black which has less output. Introduced in May 2012.


'''The rest of this page is old 4Sevens stuff that has been updated to Foursevens yet'''
=== Quark Pro ===
 
Quark Pro flashlights lights have a reverse clicky on the tail and feature 8 modes. With the head tightened, the modes are Max and Strobe. With the head loosened the modes are Moonlight, Low, Medium, High, SOS, and Beacon. They feature a Cree XP-G LED in cool white, but some models are also available with a warm white high CRI LED that offers better color rendering at the expense of about 30% of the output. Some have neutral versions which typically have about 7% less output. For the most part, the heads are interchangeable except the QP2L which has an operating voltage of 3-9V while the rest of the series has a voltage range of 0.9-4.2V. The Quark Pro series can tailstand.
 
:'''Quark QP2A''' - 2xAA light with 0.2, 4, 22, 85, or 206 OTF lumens in addition to flashing modes. This light was formerly the 4Sevens Quark AA² Regular.
 
:'''Quark QP2A-X''' The Quark QP2A with Cree XM-L LED provides 0.3, 2.7, 24, 115, or 280 lumens.
 
:'''Quark QP2L''' - 2xCR123A light with output of 0.2, 4, 22, 85, and 230 OTF lumens. In addition to the standard cool white tint LED, this light is also available with a high CRI or neutral tint LED. This body will not accept 18650 cells. The head of the 123² lights can accept up to 9V. They will also run fine on a single lithium-ion battery (17670) but will not be regulated the entire time. This light was formerly the 4Sevens Quark 123² Regular.
 
:'''Quark QP2L-X''' The Quark QP2L with a Cree XM-L LED has output of 0.3, 3, 65, 160, and 360 lumens. It is also available with a neutral tint LED.


=== Quark ===
:'''Quark QPA''' - 1xAA light with output of 0.2, 4, 22, 85, and 109 OTF lumens. This light was formerly the 4Sevens Quark AA Regular.


[[File:Quark-123-2.jpg|thumb|300px|Quark 123² Tactical]]Quark lights were introduced in May 2009 with '''Cree XP-E R2''' LED's. Models are available in Regular or Tactical version. The power switch on the Tactical version is a forward clicky that protrudes from the back of the light and prevents tailstanding. The Regular version has a reverse clicky that does not protrude and can tailstand. The Regular version has max and strobe available with the bezel tightened while with a loosened bezel you use the reverse clicky to cycle through moonlight, low, medium, high, SOS, and beacon modes. The Tactical version has only two modes (tightened or loosened), but can have any of the 8 modes programmed in. The tactical models suffer from [[Terminology#preflash|preflash]] where sometimes if the light is set to come on in low it will flash very bright when turned on. All of the Quarks have a mild preflash in Moonlight mode where the light flashes to Low before going to Moonlight. Parts are generally interchangeable but only the head of the 123² and 123² Turbo can handle the higher voltage of 2 CR123A or 2 lithium-ion batteries. All Quarks have orange peel reflectors. The clip is reversible in the sense that the body tube is reversible (the head and tail threads are identical), therefore the light can be assembled for a bezel-up clip or bezel-down. All of the main Quarks were updated to '''Cree XP-G R5''' emitters in December 2009. In September 2011 '''Quark X''' versions of the AA² and 123² were introduced in both regular and tactical versions. For thermal protection on maximum brightness, the Quark X lights drop output to about 70% after 3 minutes.  
:'''Quark QPL''' 1xCR123A light with output is 0.2, 4, 22, 85, and 205 OTF lumens. The '''QPLC''' seems to be the same light only without a clip (the clip can be removed with the other lights of the series). The QPLC is available in a high CRI version. This light was formerly the 4Sevens Quark 123 Regular.


'''Limited Editions''' In November 2011, the regular interface versions of the Quark 123 and 123² were available with '''high [[Terminology#CRI|CRI]]''' Cree XP-G LED's (CRI value 85+). These lights have a warm white tint and less output (4Sevens did not release output measurements, but Cree literature indicates the highest bin of 85 CRI XP-G's is Q3) than the standard XP-G R5. In October 2011, neutral versions of the four Quark X lights as well as neutral XP-G versions of the 123² and AA² regular and tactical Quarks were introduced. [[File:Ledtints.jpg|thumb|300px|Side-by-side comparison of a number of 4Sevens and other flashlights showing tint differences. Click for full caption.]]The entire line was available with '''Cree XP-G S2''' emitters in November 2010. In May 2010, '''warm white''' (tint 7A3 or 7B4) XP-G Q5 LED's were shipped after a pre-order period (Preon2, 123² Tactical, AA² Tactical, MiNi 123, MiNi AA, MiNi CR2, 123² Turbo, and AA² Turbo). In June 2010, '''neutral white''' (tint 4C0 or 4D0) XP-G R4 versions were introduced (Preon2, 123² Regular and Tactical, AA² Regular and Tactical, MiNi 123, MiNi AA, and MiNi CR2). Both of the 2010 limited editions featured "green packaging" (a ziplock bag) instead of coming in a box and were reduced in price by $2. When the standard LED was the XP-E R2, a limited edition '''neutral white''' (tint 5A) XP-E Q3 was available. A limited edition '''titanium version''' of all of the main lights came out in September 2009 featuring a Cree XP-G R4 emitter (the first 1000 were numbered).


'''Quark 123''' - 1xCR123A Cree XP-G R5 light with output is 0.2, 4, 22, 85, and 205 OTF lumens.
'''The rest of this page is old 4Sevens stuff that has been updated to Foursevens yet'''


'''Quark 123²''' - 2xCR123A Cree XP-G R5 light with output of 0.2, 4, 22, 85, and 230 OTF lumens in addition to flashing modes. The Quark X version, introduced in September 2011, with a Cree XM-L has output of 0.3, 3, 65, 160, and 360 lumens (review: [http://www.candlepowerforums.com/vb/showthread.php?321913 selfbuilt]). This body will not accept 18650 cells, but a separate body tube is offered that will. The head of the 123² lights can accept up to 9V. They will also run fine on a single lithium-ion battery (17670) but will not be regulated the entire time.


'''Quark 123² Turbo''' - Similar to the 123² but has a larger, deeper head for more throw and a Cree XP-G R5 emitter. Offered only with a tactical user interface, the output levels are 0.2, 4, 22, 85, and 230 OTF lumens in addition to flashing modes. In December 2010, a limited run of satin finish (bead blasted) titanium 123² Turbo's with XP-G S3 bin LED's was introduced (also MiNI 123's).
:'''Quark 123² Turbo''' - Similar to the 123² but has a larger, deeper head for more throw and a Cree XP-G R5 emitter. Offered only with a tactical user interface, the output levels are 0.2, 4, 22, 85, and 230 OTF lumens in addition to flashing modes. In December 2010, a limited run of satin finish (bead blasted) titanium 123² Turbo's with XP-G S3 bin LED's was introduced (also MiNI 123's).


'''Quark 123² Turbo X''' - Similar to the Turbo but with an even a larger head (39mm vs. 30mm). Has same tactical interface, but uses a new driver that does not exhibit preflash. Cree XM-L LED provides modes of 0.3, 8, 60, 260, and 450 lumens along with Strobe, SOS, and Beacon. Introduced in April 2011. In November 2011, 4Sevens released a version with a neutral XM-L.
:'''Quark 123² Turbo X''' - Similar to the Turbo but with an even a larger head (39mm vs. 30mm). Has same tactical interface, but uses a new driver that does not exhibit preflash. Cree XM-L LED provides modes of 0.3, 8, 60, 260, and 450 lumens along with Strobe, SOS, and Beacon. Introduced in April 2011. In November 2011, 4Sevens released a version with a neutral XM-L.


'''Quark AA''' - 1xAA Cree XP-G R5 light with output of 0.2, 4, 22, 85, and 109 OTF lumens in addition to flashing modes.
'''Quark AA''' - 1xAA Cree XP-G R5 light with output of 0.2, 4, 22, 85, and 109 OTF lumens in addition to flashing modes.
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'''Quark AA² Turbo''' - Comes with a larger, deeper head for more throw and Cree XP-G R5 emitter. Offered only with a tactical user interface, the output levels are 0.2, 4, 22, 85, 206 OTF lumens in addition to flashing modes.
'''Quark AA² Turbo''' - Comes with a larger, deeper head for more throw and Cree XP-G R5 emitter. Offered only with a tactical user interface, the output levels are 0.2, 4, 22, 85, 206 OTF lumens in addition to flashing modes.
{| class="wikitable" border="1" align="center"
|-
! Model !! Head Voltage !! Battery !! R2 Outputs !! R5 Outputs !! S2 Output* !! Quark "X"
|-
| Quark 123 || 0.9–4.2 || 1xCR123A || 0.2, 3.5, 18, 70, 170 || 0.2, 4, 22, 85, 205 || 0.6, 4, 19, 83, 174 ||
|-
| Quark 123² || 3.0–9.0 || 2xCR123A || 0.2, 3.5, 18, 70, 190||0.2, 4, 22, 85, 230 || 0.9, 4, 19, 83, 200 || 0.3, 3, 65, 160, 360
|-
| Quark 123² Turbo || 3.0–9.0 || 2xCR123A || N/A || 0.2, 4, 22, 85, 230 || 0.9, 4, 19, 83, 200 ||
|-
| Quark AA || 0.9–4.2 || 1xAA, 1x14500 ||0.2, 3.5, 18, 70, 90 || 0.2, 4, 22, 85, 109 || 0.4, 4, 19, 83, 95 ||
|-
| Quark AA² || 0.9–4.2 || 2xAA || 0.2, 3.5, 18, 70, 170 || 0.2, 4, 22, 85, 206 || 0.6, 4, 19, 83, 177 || 0.3, 2.7, 24, 115, 280
|-
| Quark AA² Turbo || 0.9–4.2 || 2xAA || N/A || 0.2, 4, 22, 85, 206 || 0.6, 4, 19, 83, 190 ||
|}
<nowiki>*</nowiki>Nominal S2 output is lower because it is measured using the [[ANSI-NEMA FL-1|ANSI/NEMA FL-1]] standard. Actual output is 7% higher than R5 output.
The following reviewers commented on these lights:
*[http://www.candlepowerforums.com/vb/showthread.php?t=233985 csshih]
*[http://www.light-reviews.com/4sevens_quarkaa/ light-reviews.com] (also [http://www.light-reviews.com/4sevens_quarkaa_2/ AA&sup2;], [http://www.light-reviews.com/4sevens_quark123/ 123] and [http://www.light-reviews.com/4sevens_quark123_2/ 123&sup2; tactical])
*[http://www.candlepowerforums.com/vb/showthread.php?t=234960 Selfbuilt]
*[http://www.candlepowerforums.com/vb/showthread.php?t=233925 UnknownVT] (includes follow up post comparing original R2 output to new R5 output)
*[http://www.candlepowerforums.com/vb/showthread.php?t=278032 Calling All Quarks] - A review of mixing and matching various quark parts.
*[http://www.youtube.com/watch?v=aCO7SWPYMgE Nutnfancy's Turbo review] (video)


=== Quark MiNi ===
=== Quark MiNi ===
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'''MiNi CR2''' - 1xCR2 XP-G S2 version has output levels of 3, 43, and 193 OTF lumens. Originally introduced in March 2010 with a XP-G R5 in titanium only followed by an aluminum version in April 2010. Output of the original versions was 3, 40, and 180 OTF lumens. Price of the titanium version includes a Batteries4Life subscription where 4Sevens sends the owner a new CR2 battery every 6 months for 10 years (3 years only outside the USA). A high CRI version was released in November 2011. Review: [http://www.candlepowerforums.com/vb/showthread.php?p=3407333 Selfbuilt]
'''MiNi CR2''' - 1xCR2 XP-G S2 version has output levels of 3, 43, and 193 OTF lumens. Originally introduced in March 2010 with a XP-G R5 in titanium only followed by an aluminum version in April 2010. Output of the original versions was 3, 40, and 180 OTF lumens. Price of the titanium version includes a Batteries4Life subscription where 4Sevens sends the owner a new CR2 battery every 6 months for 10 years (3 years only outside the USA). A high CRI version was released in November 2011. Review: [http://www.candlepowerforums.com/vb/showthread.php?p=3407333 Selfbuilt]
==Past Lights==
'''Preon ReVO''' - 1xAAA 7-mode twisty with XP-E R2 LED. Regular operation cycles through 1.8, 20, and 82 OTF lumens, but if you cycle quickly through all the modes twice, you also get strobe, SOS, and high and low beacon modes. Power is current regulated instead of PWM of the other Preons which should be more efficient. Available in black or stainless steel and has more traditional knurling instead of a smooth finish. Not to be used with a lithium-ion battery whereas the Preon 1 can be, but is not recommended. Introduced in August 2010. In December 2010, a stainless steel version with a Cree XP-G S2 LED was introduced. Discontinued (officially) in September 2011. Review by [http://www.candlepowerforums.com/vb/showthread.php?t=293634 Selfbuilt].
'''Quark RGB''' - 2xCR123A [[Cree#MC-E|MC-E Color]] head with 4 different color LED dies built in to give white, red, green, or blue output (emits from only one die at a time). Uses the regular Quark 123&sup2; body with modes controlled by twisting head loose and tight. Available in versions with regular or neutral white light in one of the dies. More of a novelty than anything, the light suffers from a very ugly beam due to the off-center LED dice. Announced in November 2009. Review: [http://www.lumensreview.com/reviews/1-led-flashlights/102-4sevens-rgb-cool-white.html Lumens Review]


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