Last Update 16-03-2025
This review is about the WURKKOS DL02 Diving Flashlight.
This is pretty compact single emitter Diving Flashlight and comes in a complete package:
- Flashlight
- 21700 Branded LiIon Battery, 5000mah-Flat Top
- usb cable A/C standard + 1A charger
- a long lanyard with rubber tubing
- 2x spare orings
- manual and papers
- battery insulator for storage
The light uses a single SFT-70 6000-6500K cool white LED, the declared Max Output on the website (on Level III-turbo) is 3.000lumens , the turbo only lasts about a minute, then the stepdown reduces the Brightness (and it goes to 1.800-1.000-300lm, declared).
In my tests, I only used it as a hiking flashlight, I have a boat, but don’t dive. Being winter the lower temperatures helped, I didn’t notice the 1-minute stepdown, the lights remained on level III for 1 hour before stepping down because of the lower voltage, the indicator was flashing red. The light was warm but absolutely nowhere hot or burning like many other 3.000+ lumen lights. The pill appears to be about 2cm long and it’s heavy, therefore mass of the head help dissipating the heat well.
It’s powered by the included LiIon 21700 unprotected, flat top rechargeable battery, the declared capacity is 5.000mah, probably at 10A, to recharge you can use the newly provided USB-C charger, with A/C cable.
In my testing, the battery charged to 4.633mah on a grading charge, which will surely stabilize with future charges, it’s a good amount, on par with similar batteries.
The charger is a standard 1A/0,75A charger, but, this time, finally with USB-C connector, so you can use a powerbank, phone charger etc to charge it. It can charge all LiIons (only, no Nimh’s) from a 10440 to a 21700 unprotected flat top.
The Wurkkos DL02 is operated by a magnetic rotary switch, with a green-red LED indicating the power level. The power level stays on all the time, useful for cave divers to know the remaining power without having to turn it off and on. The indicating LED is poweful but does not disturb night vision.
The switch has 4 positions: I, II, III and OFF.
It has been designed so that by clicking left, you always get the III High level immediately, or by turning right, you get II Mid or I low.
You can Jump to I low directly by pushing it all the way to the right, it will show II for a moment and switch lo low.
I like this switch, it’s easy and quick, it’s intuitive and does not have strobe or other useless modes.
It doesn’t have a lockout mode, but, you can unscrew the body and interrupt the electrical contact, but, I’m unaware if this reduces the waterproofness of the light if done underwater, I did not dare to try.
There is ATR Advanced Thermal regulation, that kicks in at 60°C and reduces the output to cool the light.
And lastly and very important, the light features LVP, Low voltage Protection, which turns the light off when the battery level is too low to operate safely.
WURKKOS DL02 Diving Flashlight Specs:
- LED: LUMINUS SFT70 6000-6500K
- Operating voltage: 0V-4.2V
- Beam Angle: Center 19°; Flood 60°
- Battery: 1×21700 LiIon unprotected flat top cell
- Dimensions: 133mm long, head is 36mm and body is 24mm at the narrowest point
- Weight: 130g / 0.29lb
- Reflector: Smooth Metal Reflector
- Driver: Boost constant current driver
- Flashlight body: Aerospace grade 6061 aluminum alloy, HA-III hard anodised coating, matt finish
- Water resistance i.a.w. IP68
- Dive depth: 100mt (declared)
- Reverse polarity protection to protect against improper battery installation.
- Advanced Temperature Regulation (ATR) technology, stepdown at 60°C
- LVP Low Voltage protection, it shuts the light off at 2.8v
Here’s the cardboard box:
And the content:
- DL02 Flashlight
- 21700 Branded LiIon Battery, 5000mah unprotected flat top
- usb cable A/C standard + 1A/0,75A charger
- a long lanyard with rubber tubing
- 2x spare orings
- user manual
- battery insulator for storage
This is the supplied USB charger, it’s a classic 1A input 0,75A output charger with USB-C connector, similar to others provided by Wurkkos and other brands.
The input occurs via a standard USB-C port, so you can charge it with any phone, tablet, headphones charger or a powerbank, without the need for a dedicated cable, although one is provided.
The previous model was micro usb.
There is a Red-Green indicator to follow the charging.
It is compatible with LiIon cells only, no NiMh and I didn’t try to avoid damage. The compatibility is wide, it charges from 10440 all the way through 21700 batteries, it can charge protected cells although protected 21700’s don’t fit.
The supplied battery is a WURKKOS branded unprotected flat top 21700 with a declared capacity of 5.000mah.
According to the specs I found, it should deliver power at 10A like the Samsung 50E, which could be the donator cell.
The actual capacity I was able to measure with my XTAR VC4S was 4.633mah, which for an initial grading charge is pretty good, it should stabilize at about 4.800mah after a few charges.
Here is the Wurkkos DL02 Diving Flashlight:
Diving logo typical of the DL Diving flashlights series:
To operate the flashlight there is a magnetic aluminium electronic switch with 3 positions:
- level III left
- Power off in the middle
- Level II
- Level I on the right.
As mentioned above, there is no lockout safety or other modes.
There is a power indicating LED in the middle of the switch, which remains on all the time, so you know the remaining power level at all times.
The indicator has 4 levels:
- Green: 100%-75%
- Flashing Green: 75%-50%
- Red: 50%-10%
- Flashing Red: 10% or less
At 2.8v the LVP Low Voltage Protection, shuts the light off to avid excessive discharging and potential risks.
The switch emits a satisfying “click” and is pretty precise, no floppy movement here, thanks to the magnets under the switch.
The Tailcap has 3 ridges to help with grip in wet conditions and to aid in unscrewing the tube-body to change the battery.
The body is smooth and slightly concave to help gripping the body, the matte anodizing helps surely to grip the light more.
There is a battery sign on the tailcap, in case you are unsure of the battery direction, useful in stressful situation, it’s small but can be useful when passing the light to non light people that help us.
The tailcap has a thick lanyard hole to pass the included lanyard with anti-slip tube or another of your liking.
NOTE: the tailcap does tailstand, although carefull balancing is needed.
If you need to light up a room, it does it.
The DL02 is equipped with a Domeless Luminus SFT70 6500k.
The SFT70/SFT70X comes without the classic silicone dome most LEDs come with and has 4 luminous surfaces that compose the actual LED
The bonding wires protruding from the white silicone, which presumably serve to connect the individual luminous surfaces, are also visible.
The CRI level is declared to be about 70 at 6500k
The Specs should be as follows: (official datasheet link)
- Type: multi-die (6 V class)
- Bin: KB, min. 1120 lm
- Color group: 652 (6500 K)
- CRI: typ. 70
- Rated voltage: min. 5.25 V – typ. 5.75 V – max. 6.25 V V
- Max. Forward current: 7,000 mA
- Max. Peak current: — mA
- Viewing angle: 120 °
- Thermal resistance: 0.6 K/W
- Max. Temperature Tj: max. 150°C
Lastly the thick glass lens completes the head, no cheap plastic lens here.
There appears to be no A/R coating on this one as I cannot see any blue-purple reflections on this sample.
The DL20 is equipped with a thick spring on top of the pill-driver, all encased in a thick and heavy heat.
The Spring appears to be gold plated steel, there is another on the tailcap’s end, not pictured.
The pill is screwed in and does not show presence of glue.
The golden outer ring is the contact area between the head and the body.
The DL02’s body is 1.9mm/0,07″ thick, with square cut threads and double thick o-rings for waterproofness.
Remember it’s a 100m rated diving light and at such depth high pressure is expected.
In hand Shots!
Comparison Shots!
Casstrom Woodsman
TRC Urban Tactical
CRK Umnumzaan
Victorinox 91mm Alox
Wurkkos DL02
Action Shots & Testing
Here is a beam shots gallery done on a hike in february:
The first 4 pictures are OFF-I-II-III.
The beam has a medium central spot with a secondary spill around it, contoured by a very generous amount of spill.
Its not a thrower but rather a medium range kind of beam, very useable both outdoors and for EDC.
Now to my favourite test, the freezer test!
The light was put in the freezer for a few hours on level I-low, to simulate a forgotten light in snow, a test underwater or it’s ability to withstand both cold and water.
After half a day I saw the light blinking red so I preferred to stop it at about 8-10hrs from the beginning.
It survived the test very well, as it’s bigger brothers did in the past.
Last Words and Conclusions:
I got the flashlight sent by WURKKOS to review, I was not paid for the review, what you read is my honest and personal opinion.
What I like:
- poweful high level
- long battery life
- compact
- easy to use
- very waterproof
- LED tint is not too bluish
What I DON’T like:
- Cool White LED is not for everyone, it has low CRi
- nothing in particular
Other considerations:
- a stepless rotary switch would be nice to choose a more personalised output
- Lowest level is 300lm which for some is too high e.g. at home at night
Notes:
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