Most EDC flashlights don’t look beyond the light itself. Some that do, probably pack features like bottle openers or glass-breakers into the flashlight’s body. It’s rare for EDC flashlights to offer multiple light sources – and the select few that do often only look at two light sources – a directional torch light, and an ambient light. The K1 packs three distinct light sources into a 110mm body that weighs less than 80 grams with the battery, and each source serves a genuinely different purpose. We’re talking about a 1,000-lumen white LED, a green pointing beam, and a 365nm UV light, all controlled by a rotary magnetic switch that sits mid-body. At $54.90, it’s priced like a solid single-source EDC light, which makes the feature set worth unpacking.
The question isn’t whether cramming three emitters into one flashlight is technically impressive. It obviously is. The question is whether it’s actually useful or if it’s the kind of feature bloat that sounds good in a product description but adds friction in daily use. Acebeam seems aware of this, because the switching mechanism is surprisingly thoughtful. The rotary dial lets you select your light source without cycling through modes you don’t need, and the tail switch handles on/off and brightness changes once you’ve picked your mode. That’s a smart split of responsibilities, and it suggests the design team actually used this thing before shipping it.
Designer: Acebeam
Click Here to Buy Now: $54.90.
Let’s start with the white light because that’s what you’ll use most. The K1 uses a CREE XP-LR 6500K LED that hits 1,000 lumens at turbo, with a throw of 223 meters and 12,432 candela of beam intensity. That’s solid output for a 14500-powered light, though the turbo mode steps down after one minute to 650 lumens, then to 110 lumens after another 30 minutes. Thermal management is real, and that stepdown pattern is pretty standard for this size class. What matters more is the mid and low modes: 200 lumens for 2 hours 40 minutes, and 9 lumens for a full 60 hours. The low mode is where EDC lights earn their keep, and 9 lumens for two and a half days straight means you can actually rely on this as a utility light without constantly thinking about your battery level.
The green beam is interesting (because nobody looks for lasers in their flashlights), but it’s a welcome addition. The K1 offers two green laser modes: Class 1 for general use and Class 3R for maximum visibility. Class 1 is inherently safe for any situation, including presentations around people, since the power output is low enough to prevent eye damage even with direct exposure. Class 3R cranks up the brightness for outdoor use or long-distance pointing but requires more care since direct eye exposure can be hazardous. For presentations, equipment diagnostics, or pointing out something across a jobsite or trail, a green laser beats a flashlight beam every time. It’s precise, it doesn’t wash out in ambient light, and it communicates intent in a way that waving a white light around doesn’t. But let’s be real: this feature is situational. If you give presentations regularly, work in maintenance, or spend time outdoors with groups, you’ll use it. If you don’t, it’s dead weight. The K1 doesn’t make you choose between a pointer and a flashlight, which is the value proposition, but it does ask you to carry both whether you need them daily or not.
Then there’s the UV mode, which outputs 1,000mW at 365nm. This is legitimately useful for a narrower set of tasks. Currency verification, fluid leak detection, cleanliness inspection, scorpion spotting if you’re into that sort of thing. The 365nm wavelength is ideal for fluorescence without being a UV-A floodlight that makes everything glow. Runtime is 120 minutes at high and 180 minutes at low, which is more than enough for spot checks. The use case here is less about daily carry and more about having the tool when you need it. If you’ve ever needed a UV light and didn’t have one, you remember it. The K1 bets that the weight and complexity trade-off is worth not having that problem again.
What stands out immediately is the rotary magnetic switch. This is a deliberate design choice that prioritizes tactile feedback and mechanical simplicity over electronic wizardry. You rotate the head to switch between white, green, and UV modes, and there’s a tail clicky for on/off and brightness adjustments. The magnetic detent gives you physical confirmation of each mode selection, which matters when you’re fumbling in the dark or wearing gloves. It’s a throwback to older flashlight UIs, and I’d argue it’s smarter than the multi-click sequences that plague modern lights where you need a flowchart to remember how to get to moonlight mode. The tail switch handles brightness cycling in white mode (low at 9 lumens for 60 hours, medium at 200 lumens for 2 hours 40 minutes, and high starting at 1,000 lumens before stepping down to 650, then 110 over the course of an hour). The UV has two modes: high for 3 to 120 minutes and low for 180 minutes. Strobe is there if you need it, activated by rotating the switch back and forth within 0.3 seconds, which is blessedly hidden enough that you won’t accidentally blind yourself.
Acebeam includes a 14500 Li-ion with a built-in USB-C port, so you can charge it anywhere without carrying a dedicated charger. But the real highlight is the K1’s wide voltage design, which accepts standard AA alkaline batteries and NiMH rechargeable cells in addition to the lithium 14500. This isn’t just backup compatibility; it’s Acebeam’s core design philosophy of handling various emergency situations with whatever power source you can find. If you’re traveling and your rechargeable dies, you can grab disposable AAs from any convenience store and keep going. If you prefer NiMH for environmental reasons, those work too. Performance will vary with different chemistries, but the circuitry adapts to maintain functionality across the voltage range. That kind of backup optionality is what separates a tool you can rely on from one that becomes dead weight the moment its proprietary battery gives up. The fact that they built the entire platform around battery flexibility rather than optimizing for a single cell type says something about Acebeam’s priorities here.
Build quality checks the usual boxes: AL6061-T6 aluminum, HA III hard anodization, IP68 rating (submersible to 2 meters for 30 minutes), and drop-resistant to 1.5 meters. The body is 16mm at the tube and 25.5mm at the head, which makes it slim enough to carry in a pocket without printing like you’re concealing a baton. The stainless steel clip is positioned for bezel-down carry, and the whole package comes in at 110mm long. For context, that’s roughly the same length as a Streamlight MicroStream but with triple the functionality and significantly more output. The form factor works because nothing feels tacked on. The rotary switch is integrated into the head design, and the three emitters are arranged in a way that doesn’t add bulk or weird hot spots.
Now, do you actually need all three light sources? That depends entirely on your workflow. If you’re in IT, facilities management, or any field where you’re regularly inspecting equipment, authenticating documents, or giving presentations, the K1 starts to make a lot of sense. The green beam alone justifies itself if you’ve ever tried to point something out on a distant server rack or guide someone’s attention across a room. The UV is invaluable for HVAC leak detection, forensic work, or checking hotel room cleanliness (don’t do this unless you’re prepared for existential despair). For the average person who just wants a good EDC light, the white LED is plenty capable on its own, and the other modes become bonus features you might use occasionally. But that’s fine. The beauty of the K1 is that it doesn’t force you to engage with complexity you don’t need while keeping the tools available when you do.
Acebeam nailed the execution here. The rotary switch is intuitive, the battery situation is flexible, and the light sources are purpose-driven rather than gimmicky. At 77.4 grams and $55, this feels like a legitimate problem-solver for people who juggle multiple tools and want to consolidate without compromising. Whether you’re a nerd who appreciates thoughtful design or someone who just needs a reliable light that does more when asked, the K1 deserves attention.
Click Here to Buy Now: $54.90.
The post This 3-in-1 EDC Flashlight Illuminates Things You Can’t See, Thanks to a Built-In UV Light first appeared on Yanko Design.