There is also a USB-A to USB-C charging cable included, which is a good one to use, as the charging port is recessed and in somewhat of a tight space. If the plastic head around the USB-C plug is too wide, it won’t fit. Throw was measured at 5 meters indoors using the Uni-t UT383S lux meter. I used the fully charged included Sofirn 3000 mAh 18650 battery for the test. Readings were recorded at 30 seconds. Mode

Notably, there are two versions – the ATR version, and the older version which doesn’t have thermal regulation. Medium was about as exciting as a game of Bingo at the local grange hall. Medium doesn’t fall under a regulated mode at 740 mA, so it’s still running on a MOSFET or some other regulator using PWM. The test started at 305 Lumens, and that didn’t change much, with gradual decreases in output as the battery drained. The output didn’t drop below 200 Lumens until 3 hours and 5 minutes in, then down to 150 Lumens by 4 hours 20 minutes, and under 100 Lumens by 5 hours 2 minutes. The output dropped to 72 Lumens before dropping off the scale at 5 hours 24 minutes. Sofirn’s wayyyy off here with their 7.5 hour runtime, but this is still a good figure. The light never got over 40 C the entire runtime. The other accessory it comes with is a lanyard, but the only place to attach it is onto the end of the clip, which is closer to the head than it is to the tail. This sort of makes sense, as it allows you to rotate the light between standard and overhand grips, but it doesn’t really allow for the cigar hold, and you wouldn’t want it dangling by this. For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor. Also, here’s the light with the worst PWM I could find. I’m adding multiple timescales, so it’ll be easier to compare to the test light. Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, which is 50 microseconds (50us). 10ms. 5ms. 2ms. 1ms. 0.5ms. 0.2ms.In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line. I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too. User Interface and OperationSofirn has released the SC32, a mini tactical flashlight. This light uses a Luminus SST-40 at 6000K and has USB-C charging! Read on! Maybe mine’s 6500K, but I have to say it’s still a clean beam and doesn’t feel so much like 6500K. Warmer than 6500K. (The tests below support that, too!) High reliability: Rated at IPX8 water resistance, the EDC light is able to withstand extreme weather conditions. Our handheld flashlight is made of solid aluminum alloy; with such a solid body, this portable flashlight is impact resistant and will survive a direct 3-foot drop.

I think this alignment of the switch LEDs is pretty normal… if you’re expecting them to be on… some… other axis, then this might not be the light for you. Surprisingly, the bezel is not glued down. Not only that but the threads are lubed. Usually manufacturers don’t want you getting into the bezel, but on the SC32 it’s wide open, meaning emitter swaps will be a breeze. Releasing while ramping and then holding again within 1.5 seconds will change the direction of ramp. When ramp reaches the highest level, the light will blink once to indicate. It does not blink when reaching the lowest level. LED and Beam Long-lasting Battery: With its efficient design and utilization of a single 21700 battery, the SC33 can provide extended runtime. Experience up to 11.5 hours of continuous use on the low mode, allowing you to rely on this flashlight for prolonged outdoor adventures or emergencies.ATR technology: ATR will adjust the brightness level automatically when the temperature of the light reaches 55℃ (122 °F) to prevent overheating. Here’s where things get a little interesting. Under the crenulated bezel, the SC32 uses a fresnel lens not commonly seen on flashlights. In a nutshell, the fresnel lens does the job of a convex lens by dividing up the curvature of the lens over a number of lower-profile concentric rings. This allows the lens to be flatter, saving space and material. Since this fresnel lens is shorter than standard TIR lenses or reflectors, it helps keep the light short. There’s no glass lens to cover the plastic fresnel lens, so that may shorten the overall length as well, but then the plastic lens is exposed, so keep that in mind. Measurement disclaimer: Testing flashlights is my hobby. I use hobbyist-level equipment for testing, including some I made myself. Try not to get buried in the details of manufacturer specifications versus measurements recorded here; A certain amount of difference (say, 10 or 15%) is perfectly reasonable. What’s Included Unfortunately, it is important to note that the Sofirn SC32 underperforms by about 25% all around. In reality, the visual difference between 1500 and 2000 lumens is hard to discern, but what’s advertised and how it actually does are different things.

Tail E-Switch for Easy Operation: The SC33 is equipped with a convenient tail e-switch, making it effortless to operate with just one hand. Experience seamless mode switching and effortless brightness adjustment with this user-friendly design. With 6 brightness levels and 3 special modes (strobe, SOS, beacon), the SC33 offers versatility to adapt to various situations. Whether you need a focused beam or a signaling function, the SC33 has got you covered. Enjoy intuitive control and a hassle-free lighting experience with the Sofirn SC33. Sofirn has released the SC31T, a tactical flashlight similar to the SC31 Pro. This dual switch light uses a Luminus SST-40 and has good throw. The bezel is very toothy, and I suppose is what lends the “tactical” side of things to the name. Otherwise, I am not inclined to consider this light a tactical light. On the other side of the light, the head has some cooling fins cut into it, which are identical to those found on the Wurkkos TS10. That’s where the comparisons end, I promise. In another interesting move, the USB-C charging port is on what I consider to be the front of the light, above the make a model markings. The SC32 has a narrow rubber cover for the port, unlike other Sofirms which have a larger square cover. It fits fairly snugly, but is not too difficult to remove when you need to charge. Next to the charging port is a status light which stays on for 5 seconds when you first turn the light on, displaying in green when charge is good, solid red when it’s low, and flashing red when it’s critical. It also flashes red while charging.User-Friendly Operation: The SC32 HCRI features a convenient tail e-switch that enables easy access to different lighting modes and allows for seamless operation, making it intuitive and hassle-free to use. I measured Lumens using my 30 cm integrating sphere with a Digi-Sense 20250-00 data logging lux meter that’s been calibrated with several lights of known output. Tests were conducted using a fully charged 3000 mAh 18650 cell using the stepped modes (not smooth ramping). Amps and output were measured using the included cell, but to evaluate the light’s full capabilities, I also tested it with a Sony VTC6. Mode

Another thing that’s a bit annoying is the jump between moonlight and low. The difference between low, medium, high, and turbo is ok, but not having anything between 1 and 90 (advertised) lumens is jarring. If you think accidentally activating a 10-lumen low mode when you’re expecting moonlight is bad, hitting low on the SC32 will leave you blinking for a minute afterward. It’s no better with the smooth ramping mode either, since it’s very hard to get into a level below the stepped low level. Lumen measurements (for each mode) Mode I compare everything to the KillzoneFlashlights.com 219b BLF-348 because it’s inexpensive and has the best tint! Conclusion What I like Advanced Temperature Regulation (ATR) technology: ATR will adjust the brightness level automatically when the driver temperature reaches 55℃ (122 °F) to prevent overheating. I’m not sure how they measured their runtime with this light, because their high and turbo numbers are nowhere near what I got for ANSI or shut off. On a positive note, my runtimes were much longer than what Sofirn specified. Mode For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor. Also, here’s the light with the worst PWM I could find. I’m adding multiple timescales, so it’ll be easier to compare to the test light. Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, which is 50 microseconds (50us). 10ms. 5ms. 2ms. 1ms. 0.5ms. 0.2ms. In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line. I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too. User Interface and Operation

The emitter used here is a Luminus SST-40, and my sample is 6500K temperature. There’s also a 5000K version, which I recommend you buy unless you hate everything about life. If the battery doesn’t have enough power when turn on, the LED indicator will flash red to signal critical power.