We recommend the UltraFire 502UV for anyone who wants a UV light for blood tracking, scorpion spotting, pet stains, or resin curing without spending much. Price $17.99. The partner record does not list eligibility for this product. Best for hunters, campers, and pet owners who want a low-cost 395nm UV light with an adjustable beam.
A 395nm zoomable UV light for under $20.
We recommend the UltraFire 502UV for anyone who wants a UV light for blood tracking, scorpion spotting, pet stains, or resin curing without spending much. UltraFire lists a 3W LED at 395 to 405nm, a zoomable head so you can switch between a wide wash and a tight beam, and a 60 meter maximum beam. It is rated IPX7 for submersion to 1 meter, runs for 4 hours on high, and takes one 18650, two 16340, or two CR123A batteries. The Only Flashlight version is $17.99. The trade-offs are that it has one mode and that the cheapest version does not include a battery.
What we like
- 395nm and a zoom
- A choice of cells
- Rated for wet use
Keep in mind
- The cheapest version has no battery
- Single mode only
- UV safety
The details that matter.
Manufacturer specifications for the configuration reviewed.
- UV power / wavelength
- 3W; 395 to 405 nm (manufacturer stated)
- Beam
- Zoomable; 60 m maximum beam distance
- LED life
- 10,000 hours (manufacturer stated)
- Runtime
- 4 hours on high
- Mode
- Single mode
- Battery
- 1 × 18650, 2 × 16340, or 2 × CR123A
- Voltage
- 3.7 to 7.4V
- Water resistance
- IPX7, submersible to 1 m
- Size / weight
- 133 mm long, 25.4 mm head / 3.35 oz without battery, 5.01 oz with
- Model / SKU
- 502UV / 8928 (flashlight only), 8928S (package)
Who should buy the 502UV?
The 502UV suits hunters who use UV for blood tracking, campers who want to check for scorpions, and household users who want to find pet stains or cure resin. If you want a rechargeable UV with a higher spec, see the UltraFire C15S 365nm UV light.
Zoomable beam
Twisting the head moves the beam from wide to narrow. A wide beam is better for scanning a floor or a campsite and a narrow beam throws farther, up to the 60 meter figure UltraFire lists.
Batteries and package
The $17.99 version includes the flashlight only. The $31.99 package adds an 18650 2600mAh lithium-ion battery and a DX-3 charger (US standard). Our 18650 vs 21700 guide helps with cell choices.
Build
The body is a lightweight aluminum flashlight at 3.35 ounces without a battery and 5.01 ounces with one, and UltraFire lists an IPX7 rating. LED life is listed at 10,000 hours.
Price and the UltraFire code
UltraFire lists the 502UV from $17.99. Our UltraFire reader code applies on the official store at checkout.
Why we like it.
395nm and a zoom
The 395 to 405nm range is the band used for fluorescing many stains, resins, and tracking aids, and the zoomable head lets you widen the beam to sweep a room or tighten it to reach farther.
A choice of cells
The 502UV takes one 18650, two 16340, or two CR123A batteries across a 3.7 to 7.4V range, so you can run it from whatever cells you already own.
Rated for wet use
UltraFire lists an IPX7 rating with submersion to 1 meter, a good match for a light you may use in wet brush or beside a creek.
A few things to consider.
The cheapest version has no battery
The Only Flashlight version includes just the light. The $31.99 package adds an 18650 2600mAh battery and a DX-3 charger.
Single mode only
There is one mode, so there is no low setting. UltraFire lists about 4 hours of runtime on high.
UV safety
Never shine UV light at eyes or skin, and avoid looking at the lit lens. Wear UV-blocking glasses for prolonged use, and follow local rules for lights in the field.
Get the 502UV Zoomable UV Flashlight.
Hunters, campers, and pet owners who want a low-cost 395nm UV light with an adjustable beam. Check the current price and configuration with UltraFire.
Your UltraFire reader offer.
The partner record lists this code benefit but does not specify this product’s eligibility or stacking with store promotions.
See the UltraFire code, terms & redemption stepsA few good questions.
What is the discount code for the UltraFire 502UV?
The UltraFire discount code is SEBASTIANBASSOL for 8% off at ultrafire.com. The partner record does not list eligibility for this product, so no after-code amount is estimated.
What wavelength is the UltraFire 502UV?
UltraFire lists 395 to 405 nm and 3W of UV power.
Is the 502UV zoomable?
Yes. The head zooms from a wide beam to a narrow beam, with a maximum listed beam distance of 60 meters.
What batteries does it use?
One 18650, two 16340, or two CR123A rechargeable lithium batteries. The Only Flashlight version does not include a battery.
Is the 502UV waterproof?
UltraFire lists an IPX7 rating, which covers submersion to 1 meter.
What does the package include?
The 502UV, an 18650 2600mAh battery, and a DX-3 charger (US standard).
About this review
UltraFire official 502UV product page, specification table, and included-items list, with our editorial assessment. Product details checked October 17, 2026 against UltraFire's official product listing. Shop the official UltraFire store. Images courtesy of the manufacturer. Our editorial standards.
