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Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes (Black)

4.6 4.6 out of 5 stars 292 ratings

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Color Black
Material Aluminum
Special Feature Lightweight
Included Components AAA Battery
Brand PROMETHEUS LIGHTS

About this item

  • MAXIMUM COLOR ACCURACY: Warm amber light provides high contrast and low interference; Nichia 319A LED emitter has a high CRI of 90+ designed for maximum color accuracy when measured against natural light
  • CARRY IT ANYWHERE WITH YOU: Convenient, compact size; Lightweight and reliable flashlight that fits in the palm of your hand; Easily store in your pocket, bag, and more
  • QUICK RELEASE FOR EASE OF USE: Detach flashlight from keychain quickly when ready for use; A solid click verifies engagement; Perfect for EDC as there is low risk for accidental disengagement; Push to engage and pull to disengage; Quick release holds up to 10 lb of pull weight
  • MULTIPLE MODES FOR ANY SETTING: Low (1 Lumen), Medium (15 Lumens), and High (90 Lumens) modes available; Easily access mode cycling and twist on/off function; Adapts to all needs so that you can use it at home, at work, or in the lab
  • BUILT TO LAST: Thoughtfully designed copper flashlight; Premium machine with canted coil spring; Excellent spring tension
See more product details

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Additional Information

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PROMETHEUS LIGHTS Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes (Black)


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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 4.5 x 1.9 x 0.9 inches; 0.96 ounces
  • Item model number ‏ : ‎ Beta Parent
  • Department ‏ : ‎ unisex-adult
  • Batteries ‏ : ‎ 1 AAA batteries required. (included)
  • Date First Available ‏ : ‎ September 12, 2016
  • Manufacturer ‏ : ‎ PROMETHEUS LIGHTS
  • ASIN ‏ : ‎ B01M12C5L1
  • Customer Reviews:
    4.6 4.6 out of 5 stars 292 ratings

What's in the box

  • AAA Battery

  • Product Description

    Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes

    Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes

    Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes

    Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes

    Accurate Colors

    • Warm amber light provides high contrast and low interference
    • Nichia 319A LED emitter has a high CRI of 90+ designed for maximum color accuracy when measured against natural light

    Quick Release

    • Detach flashlight from keychain quickly when ready for use
    • A solid click verifies engagement
    • Low risk for accidental disengagement
    • Push to engage and pull to disengage
    • Quick release holds up to 10 lb of pull weight

    Everyday Carry

    • Convenient, compact size designed for EDC
    • Lightweight and reliable flashlight that fits in the palm of your hand
    • Easily store in your pocket, bag, and more

    Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes
    Beta QRv2 Classic, Mini EDC Keychain Flashlight with Low, Medium, & High Modes
    Maelstrom MXS Standby Beta Quick Release v2 Foursevens Preon P2 MKIII LED Flashlight Prometheus Lights Quark QK2A MKIII Prometheus Lights Preon P1 MKIII LED Flashlight, Mini Pocket EDC Tail Switch Light with Clip
    Maelstrom MXS Standby Beta Quick Release v2 Foursevens Preon P2 MKIII Quark QK2A MKIII Preon P1 MK!!!
    Customer Reviews
    4.1 out of 5 stars
    14
    4.6 out of 5 stars
    292
    4.4 out of 5 stars
    69
    3.9 out of 5 stars
    30
    4.6 out of 5 stars
    47
    No. of Output Modes 5 3 5 4 5
    Min Lumens 5 1 1 1.5 1
    Max Lumens 1700 90 210 500 100
    Shortest Runtime 2.5 hr 50 min 1 hr 1.5 hr 1 hr
    Longest Runtime 250 hrs 50 hrs 90 hrs 210 hrs 45 hrs

    From the brand

    Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    292 global ratings

    Customers say

    Customers like the brightness, quality and appearance of the keychain. For example, they mention that it's plenty bright enough for the size, has a warm LED light that's easy on the eyes and that it looks like a work of art. That said, opinions are mixed on performance, value, and ease of use.

    AI-generated from the text of customer reviews

    35 customers mention28 positive7 negative

    Customers like the brightness of the keychain light. They say it's a great light for when you need light, with 3 brightness levels that are easily cycled through. The warm LED light is easy on the eyes, and the quality of the light is top notch. The light is small and has a strong wide light stream.

    "...At maximum brightness this thing really puts out some light. Second, I have the copper variation and it is classy and well constructed...." Read more

    "...What a clever design! I loved the look, weight and feel of the light, and now that I see it actually does its job VERY well along with me giving me..." Read more

    "...The quality of the light is also top notch...." Read more

    "...black coated version of the QRv2 on my keychain and it is a very nice little light. So when the brass ones were back in stock I ordered one...." Read more

    31 customers mention31 positive0 negative

    Customers are satisfied with the quality of the keychain. They mention it's well-constructed, durable, and reliable. Some appreciate the handmade quality and the work of functional art and engineering. Overall, customers are happy with their purchase and recommend it to others.

    "...All said, I'd buy the Beta QRv2 again for its beautiful mix of design and function. Perfection doesn't exist, but this is as close as anything...." Read more

    "...Second, I have the copper variation and it is classy and well constructed. Third, it uses AAA form factor batteries...." Read more

    "...It can run on aaa or 10440 batteries and the quality and Craftsmanship is ther, it could optd as an edc if you bought the end cap and pocket clip." Read more

    "...But it is a work of art when you hold it; definitely high quality...." Read more

    16 customers mention16 positive0 negative

    Customers are satisfied with the appearance of the keychain light. They mention that it has a clever design, a beautiful finish, and is stylish. Some say that it's a work of art and eye pleasing. Overall, most are happy with the quality and design of the product.

    "...Pros:Beautiful copper design, if you want it (and if you don't now, you will)High CRI, Nichia 219b emitter..." Read more

    "...Second, I have the copper variation and it is classy and well constructed. Third, it uses AAA form factor batteries...." Read more

    "...But it is a work of art when you hold it; definitely high quality...." Read more

    "...What a clever design! I loved the look, weight and feel of the light, and now that I see it actually does its job VERY well along with me giving me..." Read more

    10 customers mention8 positive2 negative

    Customers like the size of the keychain. They say it fits in their front pants pocket very well, is compact, yet powerful, and is perfect for EDC if they don't want a bulky light. They also say it's very comfortable and not overly large on their keychain, and that the fit and finish is second to none.

    "...First, I love how small it is for the power level. At maximum brightness this thing really puts out some light...." Read more

    "...The quick release key chain is a nice system. It is tight enough that it doesn't fall off easily." Read more

    "...this flashlight and highly recommend it for anyone looking to add a compact, yet powerful key chain flashlight to their EDC gear." Read more

    "It’s a bit bigger than I though it would be so a little to big for a keychain and for the price a pocket clip would of been nice...." Read more

    7 customers mention7 positive0 negative

    Customers like the quick-release on the keychain. They say it's well-machined, has good retention, and pops back on even easier. Some say the quick release has zero chance of coming off accidentally. Overall, most are satisfied with the quality and functionality of the product.

    "...High CRI, Nichia 219b emitterBrilliant, well-machined quick-release with a canted coil spring..." Read more

    "...The quick release key chain is a nice system. It is tight enough that it doesn't fall off easily." Read more

    "...The quick release mechanism is everything I hoped it would be...." Read more

    "...The quick disconnect system is perfect for a key ring...." Read more

    19 customers mention13 positive6 negative

    Customers are mixed about the performance of the keychain. Some mention that it looks awesome and is supremely functional, while others say that it stopped working in less than a year.

    "...weight and feel of the light, and now that I see it actually does its job VERY well along with me giving me options in light brightness I am super..." Read more

    "...A perfect blend of form and function. They look awesome and are supremely functional...." Read more

    "I really liked this light, got the nickel one. But stopped working in less than a year. That's not good for a light that cost this much...." Read more

    "...Super useful and really cool addition to my dad's everyday carry gear." Read more

    13 customers mention7 positive6 negative

    Customers are mixed about the value of the keychain. Some mention it's well worth the money, while others say it'd be better spent elsewhere.

    "...Thank you, Jason, for producing such a superb and value-added tool." Read more

    "...great buy, but a little cold on color and chintzy on the chain; Astrolux is cheap and had a way-off-center emitter..." Read more

    "Great light for the money...." Read more

    "...I would never buy it for myself because it is stupidly expensive. But it is a work of art when you hold it; definitely high quality...." Read more

    6 customers mention4 positive2 negative

    Customers are mixed about the ease of use of the keychain. Some mention that it's handy, has a good user interface, and is incredibly easy to operate the twist on the head one-handed. However, others say that it needs some instructions to tell them how to set it and operate it.

    "...The threading on the head is so smooth that it's incredibly easy to operate the twist on the head one-handed relieving any fears I had about not..." Read more

    "...It is one of those things that is so well made and a pleasure to use that to me it is worth it. Cheap flashlights I lose but this one I wont." Read more

    "Good quality light. Very handy too. Good user interface and plenty bright enough with a good low level." Read more

    "...I ALMOST knocked off a star for ease of use. The light comes with no instructions and is not intuitive as to how to cycle through the power levels...." Read more

    Copper Beta QRv2: No better blend of form and function anywhere
    5 Stars
    Copper Beta QRv2: No better blend of form and function anywhere
    If you're not buying this light for its beauty, you can find a better deal elsewhere (lumens per dollar), but you won't find a better blend of form and function anywhere.Pros:Beautiful copper design, if you want it (and if you don't now, you will)High CRI, Nichia 219b emitterBrilliant, well-machined quick-release with a canted coil springEasy, one-handed twisty - great threads, lubrication, and spring tensionNifty glow-in-the-dark material around the emitter beats GITD o-rings (e.g. Worm SS)Good levels for most usesGreat feel, heft in the handCons:Body made in China with occasional, small quality issuesPersonal preference - start level is Low; I prefer Medium for a key-chain lightI've tried a whole bunch of AAA lights including Olight i3s, Astrolux A01, Thrunite Titanium TI3 Neutral White, Fenix LD02, and Lumintop Stainless Steel Worm. I always found myself lusting after the copper beauty that Prometheus had created, and indeed, they all fall short. The Olight i3s is a great buy, but a little cold on color and chintzy on the chain; Astrolux is cheap and had a way-off-center emitter (though they have a Nichia+copper option, I didn't like the design enough); Thrunite TI3 NW is bright, solid, and I like the XP-L V4 emitter pattern, but the color, if warm, was heavily green-tinted (vs the rosier Nichia); the Fenix LD02 is a very cold-blue-colored light with a style I didn't like for a key-chain, including the rear clicky and 'tactical' look.The closest competition is, of course, the Lumintop Worm - I believe that Lumintop is the China-based manufacturer for the Prometheus Beta as well. While I don't have the Nichia+copper version, the battery spring on my 2015 Stainless Steel Worm is too tight to generally operate with one hand. It additionally lacks the quick-release that puts the icing on this Prometheus Beta.As for the bad, my Copper Beta QRv2 has a *slightly* off-center emitter. But seriously, beyond the mental factor for an $80 light, it's completely unnoticeable in the beam pattern. As far as levels, I have a preferential beef. I actually prefer the M/L/H ordering and 5-lumen Low on the Worm vs the L/M/H Beta and its 1-lumen Low. Point - 90% of the time, you turn on a key-chain light needing Medium or High. A firefly-ish, 1-lumen Low is great for saving battery life and night vision in certain circumstances, but it's rarely the level I actually want. I don't take a heavy copper light backpacking. That said, if you are going to have a 1 lumen or less Low, it should be first, so Prometheus got that right, IMHO.A note about that 'copper metal smell' which annoys some - it's not the smell of metal, but the smell of copper ions killing bacteria. Copper is naturally bactericidal and humans are good at smelling death. So, change your mind and embrace the sanitary gleam of copper ;-)All said, I'd buy the Beta QRv2 again for its beautiful mix of design and function. Perfection doesn't exist, but this is as close as anything. Plus, the guy who runs Prometheus is a fantastic U.S. designer and machinist, worthy of some hard-earned dough for a fantastic piece of work.
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    Top reviews from the United States

    Reviewed in the United States on December 4, 2016
    Customer image
    5.0 out of 5 stars Copper Beta QRv2: No better blend of form and function anywhere
    Reviewed in the United States on December 4, 2016
    If you're not buying this light for its beauty, you can find a better deal elsewhere (lumens per dollar), but you won't find a better blend of form and function anywhere.

    Pros:
    Beautiful copper design, if you want it (and if you don't now, you will)
    High CRI, Nichia 219b emitter
    Brilliant, well-machined quick-release with a canted coil spring
    Easy, one-handed twisty - great threads, lubrication, and spring tension
    Nifty glow-in-the-dark material around the emitter beats GITD o-rings (e.g. Worm SS)
    Good levels for most uses
    Great feel, heft in the hand

    Cons:
    Body made in China with occasional, small quality issues
    Personal preference - start level is Low; I prefer Medium for a key-chain light

    I've tried a whole bunch of AAA lights including Olight i3s, Astrolux A01, Thrunite Titanium TI3 Neutral White, Fenix LD02, and Lumintop Stainless Steel Worm. I always found myself lusting after the copper beauty that Prometheus had created, and indeed, they all fall short. The Olight i3s is a great buy, but a little cold on color and chintzy on the chain; Astrolux is cheap and had a way-off-center emitter (though they have a Nichia+copper option, I didn't like the design enough); Thrunite TI3 NW is bright, solid, and I like the XP-L V4 emitter pattern, but the color, if warm, was heavily green-tinted (vs the rosier Nichia); the Fenix LD02 is a very cold-blue-colored light with a style I didn't like for a key-chain, including the rear clicky and 'tactical' look.

    The closest competition is, of course, the Lumintop Worm - I believe that Lumintop is the China-based manufacturer for the Prometheus Beta as well. While I don't have the Nichia+copper version, the battery spring on my 2015 Stainless Steel Worm is too tight to generally operate with one hand. It additionally lacks the quick-release that puts the icing on this Prometheus Beta.

    As for the bad, my Copper Beta QRv2 has a *slightly* off-center emitter. But seriously, beyond the mental factor for an $80 light, it's completely unnoticeable in the beam pattern. As far as levels, I have a preferential beef. I actually prefer the M/L/H ordering and 5-lumen Low on the Worm vs the L/M/H Beta and its 1-lumen Low. Point - 90% of the time, you turn on a key-chain light needing Medium or High. A firefly-ish, 1-lumen Low is great for saving battery life and night vision in certain circumstances, but it's rarely the level I actually want. I don't take a heavy copper light backpacking. That said, if you are going to have a 1 lumen or less Low, it should be first, so Prometheus got that right, IMHO.

    A note about that 'copper metal smell' which annoys some - it's not the smell of metal, but the smell of copper ions killing bacteria. Copper is naturally bactericidal and humans are good at smelling death. So, change your mind and embrace the sanitary gleam of copper ;-)

    All said, I'd buy the Beta QRv2 again for its beautiful mix of design and function. Perfection doesn't exist, but this is as close as anything. Plus, the guy who runs Prometheus is a fantastic U.S. designer and machinist, worthy of some hard-earned dough for a fantastic piece of work.
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    Reviewed in the United States on June 27, 2018
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    5.0 out of 5 stars I was glad I did
    Reviewed in the United States on June 27, 2018
    I was skeptical paying this much for a AAA keychain light especially since I prefer a clicky button interface to a twisty but I bit the bullet mostly because of the quick release attachment (seriously - why don't more lights at this size that are supposed to be put on a keychain come up with something that will get the light off the keychain quickly?). I was glad I did. The quality on the light is amazing. I'm not sure what they do for the nickel plating but it's been traveling on my keychain for a couple of weeks now and doesn't show any sign of scratching. The quick release mechanism is everything I hoped it would be. So much so, I'm considering buying another of the Prometheus QR attachments for my keys. The threading on the head is so smooth that it's incredibly easy to operate the twist on the head one-handed relieving any fears I had about not having a clicky interface. The quality of the light is also top notch. It's not the brightest light out there at the AAA size but the quality of the light it makes is second to none. Overall I'm really happy with this little light.
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