This is the Wurkkos DL04, a jellyfish-shaped diving light rated with IP68 for 100m underwater, with RGB and neutral white (3000K) light and a 16340 800mAh battery with USB-C charging.
• My opinion:
The flashlight is fun and not much expensive, it’s main purpose is to be a signal light, though it can light up things near you and serve as a small lamp when it’s dark. It seems decently water-proofed and the USB-C port being on the battery helps with that.
• Box contents
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DL04
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Lanyard
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Keychain carabiner
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4x extra O-rings
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USB-C to C charging cable
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User manual
• Price
The DL04 is currently priced at $19.42 on the Wurkkos AliExpress Store and $16.99 on the Wurkkos Official Website.
• Body and build quality
Colors/Material Options: It’s only available in aluminum alloy with a “Silvery” anodizing.
Material: The main body is made of an aluminum alloy and the diffuser it made of a hard thick matte plastic.
Main body: The main body is very simple and a solid piece, there aren’t any button/holes on the main body other than where the diffuser screws on.
Threads: The main body threads are anodized and the flashlight will only turn ON if the light is fully tightened, the UI uses this feature to cycle between modes.
Tail stand and rolling: The flashlight can only tail stand, as the head is round. It rolls a lot as there are not any grooves on the main body to stop it.
AUX lights: The DL04 is kind of a really big AUX light.
Buttons: There are no buttons on the flashlight, the UI is fully controled by tightening the main body into the diffuser.
Battery contact: Contact is made with the battery by a gold-coated spring on the tail cap (main body) and a flat brass button on the driver.
Water Resistance: This flashlight has the IP68 rating with 100m of water resistance. To achieve this the flashlight has double O-rings on the thread, so if one of the O-rings fail, the other one will be there to hold the water outside.
Size Comparison: On the left is the Armytek ELF C1 USB-C, on the middle the DL04 and the Convoy S2+ on the right.
• Weight and size
Weight:
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With battery: 56.8g
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Without battery: 37.5g]
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Battery (Wurkkos 16340): 19.2
Size: 37.8mm (Dome diameter) / 23.4mm (tail diameter) x 64mm (total height)
• Battery, runtime, and charging
Battery: The DL04 is powered by a 16340 Wurkkos branded battery with 800mAh of capacity, it’s a decent capacity for it’s size. The battery has a USB-C port near the top of the flashlight, with a charging indicator on the top of the cell.
Battery Indicator: The flashlight will flash a color everytime it’s turned ON to indicate the battery level as it follows:
| Flashing color | Battery level |
|---|---|
| Green | 100% - 60% |
| Yellow | 60% - 30% |
| Red | < 30% |
Charging: It has a USB-C charging port on the battery as I commented before, charging is kinda slow, as it only charges at 5V 0.4A taking about 2h30min to fully charge. The slow charging is probably to preserve the battery and prevent overheating on the small driver.
• Modes, Runtimes, Throw, Candela:
Modes: The DL04 has a total of 10 modes, them being: warm (3000K) white; green, red, orange, blue each one also having a flashing mode and RGB rainbow mode.
| Mode | Brightness (lumens) | Runtime |
|---|---|---|
| Warm White (3000K) | 9.5 | 14h50min |
| Green | 5.4 | 30h43min |
| Red | 1.9 | 30h |
| Orange | 3.6 | 23h49min |
| Solid Blue | 1.7 | 31h25min |
| Rainbow | - | 26h |
| Flashing Green | - | 58h31min |
| Flashing Red | - | 57h25min |
| Flashing Orange | - | 45h |
| Flashing Blue | - | 60h |
Throw: The flashlight is mainly for short range flood illumination, so it throws almost nothing, as it’s pourpose is more of an indicator.
• Emitter, reflector and CRI:
Emitter: This flashlight uses the SK6812 emitter, it’s a RGB + warm white emitter, usually used in LED strips for decoration.
Reflector/TIR: The DL04 has a dome diffuser that resembles a jellyfish when the flashlight is turned ON.
CRI: The CRI is standard 70 from what I could find about this LED.
• Driver and UI
Driver: Wurkkos does not say which driver it uses, but I did not see any PWM while testing it, so I assume it is a regulated driver.
UI: The UI is pretty simple, but as there are no buttons on this flashlight, it’s kind of slow to cycle between modes. To cycle modes you must untwist the diffuser from the body to disconnect the driver and quickly tighten it again to make contact. If you do it fast enought the flashlight will turn ON in the next mode.
Low Voltage Warning: When the battery charge is too low and the light is turned ON, it will blink 3 times every 3 minutes to indicate the low voltage. If the voltage is too low the flasghlight will turn OFF automatically.
Temperature Control: The flashlight does not heat up in normal conditions, so I assume it does not have any kind of temperature control.
Lockout: Lockout is only present by unscrewing the diffuser from the main body, turning the flashlight off.
Blinkies: Every solid color has a flashing mode and the rainbow mode is also present.
A special thanks to Wurkkos for sending this flashlight for me to review!
*I am not being paid to do this review, everything here is my honest opinion.
Thank you for reading my review <3
