Sofirn SK31
Reddit take
Not enough linked mention summaries yet; the source excerpts below are the evidence.
Pros
- Sustain on the SK31 is really good!
- I see Sofirn started to make this clear on their newer lights like the SK31 and I respect that.
- Parent context: I don't have the equipment to make the runtime graphs yet, but I tested the light for PWM and did not identify any. So this driver should be at least linear/Buck. Reply: This has all the fixes I’d want.. and dual buttons...
- I recently purchased an SK31 for EDC.
- it’s a nicely built flashlight and a couple of UI changes would have made it perfect (forward clicky in outdoor mode and any low output in tactical mode when locked).
Cons
- Sofirn SK31—its UI is a bit of a letdown, but it still gives you momentary turbo and strobe modes.
- I dislike the tactical UI. Having to hold for 5 seconds for the light to stay on is way too long and you can easily accidentally turn off the flashlight in a high stress situation... Additionally, not having any mode under 600lm 8n tacti...
- The SK31 is a rather unique flashlight. On one hand, you get two distinct UIs with a dedicated toggle switch, a hidden sleeve over the USB port, a physical lockout switch, and a two-stage e-switch, on the other hand, there are no direct...
- Initially I was ok with the UI, the more I used it, the worse it felt. But the build quality is amazing! Just a few UI tweaks and this would have been a perfect flashlight.
- Great hardware, poor software – that’s the Sofirn SK31 in a nutshell. The combination of a powerful LMP LHP73B with a well-regulated driver, a two-stage tail switch, a separate switch for the lockout and a screwed cover for the USB-C cha...
Sentiment
8 positive (40%) · 7 mixed (35%) · 5 negative (25%)
Trust + time weighted score: +15% · raw score 15%
What redditors said (10 of 20)
Sofirn SK31—its UI is a bit of a letdown, but it still gives you momentary turbo and strobe modes.
Sustain on the SK31 is really good!
I dislike the tactical UI. Having to hold for 5 seconds for the light to stay on is way too long and you can easily accidentally turn off the flashlight in a high stress situation... Additionally, not having any mode under 600lm 8n tactical UI forces you to switch UIs just to not have to blind yourself
The SK31 is a rather unique flashlight. On one hand, you get two distinct UIs with a dedicated toggle switch, a hidden sleeve over the USB port, a physical lockout switch, and a two-stage e-switch, on the other hand, there are no direct shortcuts whatsoever. ... Sofirn definitely needs to fix that Outdoor Mode Turbo bug either way, though!
I see Sofirn started to make this clear on their newer lights like the SK31 and I respect that.
Parent context: I don't have the equipment to make the runtime graphs yet, but I tested the light for PWM and did not identify any. So this driver should be at least linear/Buck. Reply: This has all the fixes I’d want.. and dual buttons and a rotary switch, that’s pretty cool.
Initially I was ok with the UI, the more I used it, the worse it felt. But the build quality is amazing! Just a few UI tweaks and this would have been a perfect flashlight.
Great hardware, poor software – that’s the Sofirn SK31 in a nutshell. The combination of a powerful LMP LHP73B with a well-regulated driver, a two-stage tail switch, a separate switch for the lockout and a screwed cover for the USB-C charging port provide the perfect hardware foundation for a great flashlight. The operation is all the more disappointing. The two-stage switch leaves much of its potential unused. For example, there is no direct access to the lowest or highest brightness level and in Tactical Mode, the switch must be held halfway down for a full five seconds to keep the flashlight on. Minor firmware bugs make the overall experience even less enjoyable.
This was actually the first flashlight in my entire life that I ended up returning after using it for just two days after buying it on AliExpress. The worst part was, hands down, the atrocious UI that you pointed out. Another huge issue is that the "Low" mode in Tactical mode actually outputs at Medium brightness.
By the numbers and the performance, it doesn't look that bad. Behaves exactly like what I'd expect from a light that size running an LHP73B as far as thermals, output and runtime go. But that UI is what betrays the light...
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