sofirnFlashlight High Lumens, 8000 Lumens Super Bright SP36 Pro Powerful Light USB C Rechargeable with 4*LED 5000K, Anduril 2.0 Programmable UI and Charging Cable（SP36Pro 5000k）

I like this flashlight. It is a serious, functional, and well-designed light. It has only two minor "cons" which I'll get to below. On the "pro" side, it is probably the best small flashlight I've ever owned. It is well programmed. It is easy to turn on and get to the precise brightness I want -- from battery-saving dim to movie set bright -- without getting tangled in blinking and flashing modes. I can't prove the numbers, but I would guess the manufacture's claims of brightness are valid. It can be *VERY* bright. It has strobe and blink modes, but they are programmed separately so they don't get in the way. I won't go into all the "accessory modes" (blinking, flashing, whatever) since I don't use most of them, but I'll admit some are rather creative. For example, there is a patterned flashing mode like a bicycle light to carry when you are walking next to an unlit road at night. And there is a slow-flash "beacon" mode that could be useful to someone stranded on the water or in the wilds at night. There is even a mode that blinks-out the battery voltage so you know when to recharge. Depending on how much brightness you use, a charge on the three Lithium batteries can last for a very long time.The aspect ratio of the body of this light is different from most flashlights -- it is short and fat. It fits well in my hand -- and I'm not a big person -- with the single control button comfortably under my thumb. The button action is crisp and well-defined. The reflector does not have variable focus, but with the brightness this light has, I don't consider that to be a problem.Which brings me to the two "cons": first, and most important for the way I often use this light, there is no place to attach a wrist lanyard. Without a lanyard, I fear dropping the thing overboard. I have temporarily rigged something with zip-ties and some cord, but it's a kludge. When I have time, I will try to do better with some macrame wrapped tightly around the body of the light. But I shouldn't have to do those things for a light of this quality and price. There should be a solid way to attach a wrist lanyard. The second thing that bothers me is the little rubber plug that covers the charging port. My experience is that these plugs, which occur on many devices, don't hold up well. They soon fatigue and break off. When that happens the device is no longer waterproof. So I guess I just have to be careful with it.And one other note: This light can be used to light an indoor space, like a room. It stands easily on its back-end pointing up and reflecting off the ceiling for nice indirect lighting. The manufacture recommends using a diffuser to scatter the light around the room, and apparently they sell one for the purpose. Amazon doesn't sell them and I haven't gone searching elsewhere for one, but I have made a perfectly good diffuser from a piece of baker's parchment (I might also try tracing paper) rolled into a long cone and placed on top of the upward-pointing light. It works.

Hold the in off button to adjust brightness and when you turn it off it’s at that level when you turn it back on. Simple to use and extremely bright. Can imagine what a brighter light would be like because this one has blown me away. If there were a con, it would be no wrist strap or place to ad one. Other than that, it’s more than adequate.

I'm very impressed with the Sofirn SP36 Pro. The lumens/dollar ratio is very good. Typical of all of my Sofirn lights, the build quality is excellent. I'm partial to 5000K color temperature, and this flashlight fits the bill nicely. What I like most about this flashlight is its size. I own a BLF Q8. The Q8 is a nice light, but it's a bit of a handful for me. The SP36 Pro fits much more comfortably in my hand (three 18650 batteries as opposed to four in the Q8). Consequently, the likelihood is much higher that I'll grab/carry the SP36 Pro as opposed to the larger (and fewer lumens) Q8. I'm a fan of the Anduril user interface, so I was very comfortable with the SP36 Pro out of the box. Adventure Sport Flashlights mentions in his review the advisability of recalibrating the temperature sensor, but I haven't done so yet and I haven't perceived an objectionable reduction in brightness over a short period of time. My typical flashlight usage is in short bursts, so whereas I do intend to calibrate the sensor, I could easily forgo that and probably would not encounter any objectionable brightness drop-off.My single CON: I wish it had a lanyard attachment point, but I certainly can live without one.Overall, a 5-star rating!

Worked great for a short time and then stopped. I have many flashlights and I did like it but it didn’t last long before failing.

This is a cool flashlight. It is relatively compact for packing three 18650 batteries and four LED emitters. The kit comes with three of Sofirn's 3000mAh batteries, a USB charger, spare O-rings, and an instruction booklet. I've had at least three other lights that use these batteries and they seem reliable.The four emitters create a clover-like spot with generous spill. It is reasonably floody but still has reach. In the pictures, you can see the emitters on their lowest setting. The lowest setting is gentle enough to look at with the naked eye and provides a nice "moonlight". You can also see the highest setting at various orientations on a fairly clear night. The next night was foggy so I was able to get a really nice picture of the beam pattern shining up and out at an angle.The electronic switch glows green with two small emitters. This makes the light easier to find in the dark. The user interface from the box allows for smooth ramping from low to high and back again. There is a turbo mode that can be accessed with a double-click but honestly, the regular high mode is already extremely bright. Overall, this light can easily offer whatever you need, from mild to wild, and can really last for extended outings with a little attention to power economy.