Olight Wyvern

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Olight Wyvern review

Olight Wyvern specifications

Brand & ModelOlight Wyvern
Flashlight categoryBike Light
Max. output300 lumens
Max. beam distance80 meters
Max. beam intensity2,000 cd
Battery config.built-in cell
Onboard chargingUSB-C Onboard Charging
Review publication dateFebruary 2023


Being healthy is good. There are plenty of ways to accomplish this task and for a lot of people (especially after the new year) one might feel inclined to find a more ‘economical’ way to achieve this task. There is hiking, swimming, and among other things, biking. Let’s focus on the last of these choices. With plenty of options out there to outfit your bike and illuminate the road ahead, sometimes you don’t have to jump in with both feet, or both checking accounts, to get started in a sport or activity. Being a newcomer in the bike light arena from Olight, this has a lot to live up to. They have quite a few other options and from what I have heard, are particularly well received. The Wyvern doesn’t follow their normal aesthetic. It is plastic and colorful, but at the same time, the price doesn’t quite follow suit, either. Let’s find out together if the budget option in bike Lights from Olight is any good, or if one of the other options they carry would be better suited to getting you on the trails and on your way to a healthier you.

Package quality.

The packaging for the Wyvern is incredibly standard fair for normal edition lights that come from the Olight factory, but that isn’t to say that it is bad. It is a very clean white box with a tear tab up top to allow access to all of the goodies inside. On the off chance you don’t know what is in there, you have a color photo of the light up front and center on the outside to show you exactly what to expect. On the back there is a short description of the light, followed by basic output and runtime specifications. The only thing that stands out to me as different is the inclusion of the ‘Made by Magicshine’ text under the Olight company information. But this all makes sense, considering the two companies have a history of partnerships when it comes to bike lights. Inside, there is a contortionist’s nightmare of cardboard that houses the Wyvern and separates it from the accessories. The light clips into the back of the cardboard with a plastic piece that mimics the handlebar mount, which is hidden underneath in a little compartment with pull tabs that release the light. Behind this cardboard, there are the user manual and stickers to decorate your light. Piece by piece, the package includes:

  • Olight Wyvern
  • Handlebar Mount
  • USB-C Charging Cable
  • Sticker Set
  • User Manual

Flashlight in use

The Unusual thing about high gloss plastic is it can feel quite slippery but then grip quite well if any force is applied. The body of the Wyvern feels sturdy enough, but following my experience with past Olight products, the plastic feels like they are more focused on providing cost effectiveness over feel. It does still feel quite sturdy, but in a way that seems to be caused by the addition of materials versus the choice to use proper materials. The Wyvern does have an e-switch mounted on the top of the light with four hidden battery indicator LEDs in the switch surround. The square design means it won’t slide around or roll if you were to have it sitting on a table, but its intended purpose is on the handlebars of a bike.

It is not intended to be a pocket carry light (although it may be small enough) so there is no lanyard attachment or pocket clip. What it does have is a handlebar mount attachment point on its bottom side that would get in the way if you tried to use it otherwise. This is obviously not designed to be used as a double duty light in any capacity and as such, this bike light is just that. A light that is designed to be mounted to a set of handlebars and stay there. It will be waiting to be used for that purpose and try to complete that job to its fullest ability.

Build Quality and Warranty

The plastic I spoke of earlier means the light can be lightweight, sturdy, and in this instance, cheap. Exotic metals are expensive and even more, cost more to produce in intricate shapes. The Wyvern circumvents all of these associated costs using an injection molded plastic construction method all the way around. This particular Wyvern is blue, but it also comes in pink. Being completely transparent, I feel like this is a miss to not have standard colors like black or even other ‘more neutral’ tones. Unless, of course, it was intentional and this is geared towards children. The bright color choice, however, is complemented by the black silicon and plastic that comes in the form of a slightly stretchy bike mounting bracket. This allows a quick quarter turn to release and attach the light as well as multiple holes to adjust tension.

This seems quite well made and provides a stout mounting point that didn’t rattle in the slightest when the Wyvern was in place. The mount is well made, but the light on the other hand, did have two issues I can speak of. The first, and maybe I am just being nitpicky, is the plastic on one side that meets up with the bezel is sticking out slightly. The other, and the worst offender in my eyes, is that there is a rattle inside the light.

It is almost as if a plastic section from molding broke off and it wasn’t caught during quality control. This wouldn’t be a huge deal, but if you decide to ride your new ‘health machine’ off-road at all, then the noise (as small as it may be) could interfere with your journey.

Olight’s warranty:

At Olight, we always care about your experience as a customer and want to ensure you have no concerns regarding after-sales service. On September 16th, 2023, we sincerely make the following important promise:

If you purchased an Olight® product from Australia, China, France, Germany or the USA after January 1st, 2023, the local service centers in these countries will honor your LIFETIME WARRANTY for your purchase. If your Olight® product (including its structure, built-in battery, LED, or lens) ever experiences any issues, we promise to take care of it. If we are unable to repair your product, we will promptly replace it with a product in perfect working condition, which will be of equal or better physical condition. If your purchase is a limited or discontinued edition of Olight® product, we will repair or replace it with another Olight® product of the same or higher value.

LED, Lens, Bezel, Beam, and Reflector

The entire lens of the Wyvern is, like the rest of the body, made of plastic. There is no bezel at all. Embedded in the plastic lens is a TIR optic as well as stepped beam cut off lines to help achieve the lights anti-glare properties. This same lens extends to the side of the Wyvern as a sort of makeshift side marker light. It is listed as an XP73 LED and I can speculate as to what this is or who it is made by, but it would be just that; speculation.

What I can tell you is that Olight tells you that it will come through at 6000-6500k for the color temperature. Mine came in warmer than that, closer to a neutral white. Low mode achieved 5300k and the highest it went was 5500k. This is also +.0147 DUV and gives a greenish tint to the light. I fully expect it, since this is a budget friendly option.

This is not a fluke with low output though, since Medium came in at +.0125 and High is +.0120, respectively. Also, all color renderings come in under 69 CRI, so if you need to have good color reproduction on your trail rides (or want your children to), this may not be the option for you. Personally, in my experience, I like to have more output and a better tint so I can tell as early as possible if I need to hit the brakes hard. Your child may not be riding as quickly, so this is a non-issue. For the beam, the ridges don’t seem to be doing too terribly much in the ‘cutoff’ department. There is a very (emphasis on very) slight decrease in the beams spill on the topside, but it is there… ish. To my eye, it appears almost as if there is a deep crenulation on the lens, although I know this is not the case.

Finally, the beam does have a smooth transition from its hotspot outward, but the hotspot is still quite pronounced, and I can assume this helps with the throw (more on that in the performance section).

Dimensions and its competition


Olight WyvernMillimetersInches
Length106 mm4.2 in
Head diameter35 mm1.4 in
Body diameter29 mm1.1 in

Dimensions are rounded to the nearest millimeter, and to the nearest tenth of an Inch.


Olight WyvernWeight in gramsWeight in oz
With battery106 g3.8 oz

Weight is rounded to the nearest gram, and to the nearest tenth of an ounce.

Flashlight size comparison with other bike lights:

Olight Wyvern

Astrolux SL01

Olight Wyvern UI: User Interface and Driver

Available modes: 

  • Low, Medium, High

Available blinky modes:

  • Quick Flash, SlowFlash

From OFF:

  • Press and hold: 1.2 seconds to turn on.

From ON:

  • Press and hold: 1.2 seconds to turn off
  • 1 click: Cycle through all modes (Low, Medium, High, Quick Flash, Slow Flash)

Mode memory:

  • There is a mode memory that will allow you to turn the light back on to the last saved mode.

Low voltage warning:

  • The battery indicators (discussed below) will alert you to operating on a low charge. A single LED will flash when your low is critically low.


  • Quick Flash, Slow Flash are activated by cycling through all modes when light is on.

Lock-out mode: 

  • Long press button for 3 seconds to enter and exit lockout.


  • After using the Opple Lightmaster Pro, It was evident that not only is PWM extremely evident, there was no adjustment needed from my phone camera to catch it on that device and it was also visible by the human eye.

Additional/summary info on the UI: 

  • The UI is quite reminiscent of the ol’ zoomie lights, with a small switch up in the blinky modes. Fortunately there is a Mode memory that allows you to ‘save’ a preferred setting.

Olight Wyvern Charging and batteries

The USB-C charging port is protected by a large flap of silicon that nests to the body of the bike light. There is a ridge molded into that cover to allow a “gasket” to keep water intrusion to a minimum. The battery itself I can only assume is built-in and I see no signs of being able to easily remove and replace it. As far as the actual charging process, using the included USB-C cable and a 65W capable power brick, charging started at .9a for the first 1h 30 minutes, at which point dropped to .56a. This continued to decrease, hitting .25a at 2h 15 minutes. It stayed steady until the charging process completed at 2 h 34 minutes. One important thing to note is that the second charging cycle I performed completed at 2 h 35 minutes. It is very consistent. On the top of the light, surrounding the button, is a black lens that hides the battery indicator LEDs. They are always green and will alert you to the status of the battery with a short press and will stay on while the light is on.

The indicators will read out:

4 LEDs Illuminated = Battery between 81-100%

3 LEDs Illuminated = Battery between 51-80%

2 LEDs Illuminated = Battery between 31-50%

1 LED Illuminated = Battery between 21-30%

1 LED Flashing = Battery between 0-20%

Performance test

All measurements were taken using a purpose built integrating sphere and an ExTech SDL400 datalogging lux meter. The known output from a light source (273lm Convoy S2+) was then taken into account when getting my figures calibrated for accuracy purposes.

Lumen measurements (for each mode)

ModeSpecifiedturn on30 sec10 minutes

Battery Life: Runtime graphs

The built-in cell was charged until the charging circuit completed and then each mode was tested. Each runtime test was done until the lights shut off unless they were to take over 24 hours.

ModeSpecifiedMeasured runtime ANSITime till shut off
Low11h 30min12h 28min12h 28min
Med5h 30min5h 21min5h 50min
High3h 30min3h 57min4h 27min

I am always a fan of when a light outperforms its own specifications. Longer runtimes means more riding and more riding is always a good thing (Too bad we are covered in ice at the time of this review). The longer runtimes do align with the lower output that I was seeing. All in all, for a small capacity battery, the runtimes will allow you to get a lot of use on the trails without worry. 

About ANSI FL1 standards: The runtime is measured until the light drops to 10% of its initial output (30 seconds after turning on). This does not mean that the flashlight is not usable anymore. The last column shows how long the light actually works till it shuts off. If there is a + symbol, it means that the test was stopped at that particular point, but the light was actually still running. This happens on certain occasions, with certain drivers, firmware, or batteries.

Peak beam intensity and beam distance measurements

Throw information was gathered using an Opple Lightmaster Pro at 5m.

ModeSpecifiedCandela measured MetersYards
Low450cd1,100cd66 m72 yd
Medium1,000cd1,925cd88 m96 yd
High2,000cd2,800cd105 m115 yd

I do find these numbers to be fairly accurate, even though they were higher than specifications. At such a low output, the difference between 14m of throw would be negligible unless you had a purpose built light like an LEP or something along those lines.

About peak beam intensity: Peak beam distance according to ANSI FL1 standards: The calculated value of distance in meters at which the flashlight produces a light intensity of 0.25 lux. (0.25 lux is about the brightness of a full moon shining on an object). The columns ‘Meters’ and ‘Yards’ use rounded numbers.


Camera settings and distance: Panasonic Lumix G7 with ISO 5000 and ev0.0 at 70y.

Beamshots of the following flashlights compared:

  • Olight Wyvern
  • Astrolux SL01

Disclaimer: This flashlight was sent to me for review at no cost by Olight. I have not been paid to review, nor have I been holding back on problems or defects.

Final Verdict


  1. Incredibly easy UI
  2. Outperformed throw specs
  3. Cheap!
  4. Mount is very sturdy


  1. UI: have to pass blinky modes to return to low
  2. Very evident PWM
  3. Low on output specs
  4. The light is rattling…

Explanation on star ratings:

1: Avoid: a match would be a better choice – 2: Poor: significant defect or issues; almost unusable – 3: Average: some defects or issues; but still usable 4: Good: recommended (minor issues) – 5: Great: highly recommended

Author: Josh

3.5 stars: ★★★⋆

I came into the Wyvern as a cheap alternative to the more expensive bike lights and it was just that, exactly. There are parts of the light that are very easy to use and make it wonderful, but these are counteracted by a few QC hiccups that I feel shouldn’t have made its way to a customer.

First off, The UI is one that anyone can jump in on without having to read a manual. Hold it to turn it on, press again to switch modes. Simple as that. The price also makes it an incredibly compelling choice. Not sure if you’ll like biking when the sun starts to fade? Try it out with a 23-dollar bike light.

The very basic mount is quite thick and sturdy if you stretch it out. Without the few hiccups I experienced a brighter output, I could definitely recommend the usability of this light. Frankly, I feel they missed a market by not having black or other “Standard Olight” colors in their arsenal. Just a blue and pink option lend me to think this is intended specifically for children. All in, The Wyvern is only considered whelming to me. Not under. Not over. Just whelming.

There are better options for a small increase in price and those are the routes I would take. It is still surprising that a company can make money while selling a light this inexpensively that still performs its job. At the price, I still expected less, so the Wyvern earns 3.5 stars from me.

Buy Olight Wyvern with our discount code

Use our exclusive 1lumen discount code to get an extra 10% off anything you order at Olightstore.com (USA). Coupon code: 1lumen

1lumen selects and reviews products personally. We may earn affiliate commissions through our links, which help support our testing.