[77outdoor] High CRI + RED 660nm dual led headlamp D25LR

the max current is 2.2A for now, but it can be raised to 3A so the SST20 6500K/4000K can be brighter. The lowest current 10mA, I am not sure if it can be lower. My eyes still hurt when looking directly at the led at Lowest brightess.

Will it have Type-C ( -> Type C ) charging?

I doubt it since they’re just using the host which has micro usb. Not really worth it on such a cheap model. Sofirn aren’t the manufacturer for that host.

Yeah I’m thinking the same but one can dream I guess :slight_smile:

SST20 in 5000K and 6500K look like shit so yes.

Yes, the previous model put out more light. But the use case for this light is different than the SST-40 model, imo.

I believe all the average consumer needs to know is that this light for close up work. Ie, camping, walking around your house at night, or reading. These are also situations where better CRI can be useful.

The SST-40 model is for applications where you need lots of light with some reach.

Interested for sure.
I’d vote for 2700K or 3000K sst-20 white led.

Me too

Assuming that D25S aims to a target group with emphasis on a "no frills" light for a true budget price, I would definitely say YES.

Yes, I believe that kind of headlamp would sell well. Eventually, it's all about the right target group and the budget this kind of group is willing to spend.

In my humble opinion, D25S does not aim to be a highly sophisticated premium flashlight, not even close. If I am not totally mistaken, the odds are good that Sofirn (and maybe Wurkkos as well) will be developing their own dual emitter headlamp which provides both white and (deep) red light. That flashlight will probably put more emphasis on a more flexible UI, better host design, native USB-C support, better driver components, way more flexibility on minimum LED current, etc..

If I was to give recommendations, I would suggest downsizing a light like Wurkkos HD20 or D25S to AA/14500 format (or at least keep 18650 size), strip everything down to be as lightweighted as possible and use an efficient constant current buck/boost driver (depending on battery chemistry). 300 lumens of white light is a lot for a small headlamp and should normally suffice in most situations for close-range illumination. With deep red in addition you may get up to 30-40lm of pure red light for preserving your night vision in dark caves or too reduce backscatter of light in misty ambient conditions. Thinking about preserving one's night vision, I would suggest to have ultra-low "firefly" mode(s) for using deep red, again something that D25S is not designed to for.

In the end, it's about the right advertising and fulfilling the needs of your target groups.The majority of customers will always follow the way to get most lumens for the best achievable price. I believe in order to catch the spoiled flashoholic's attention it takes to highlight terms like constant brightness, 95CRI color rendition, high efficiency driver, ingenious user interface.

Can you made like this one but only for 15$ :smiley:

RGBW led? I think led is expensive. I don’t think it possible to make it and sell at such a low price.

Let call it D25WR

with SST20 4000K (or 2700K) + SST20DR 660nm is no problem.

3A current can make it 500LM roughly at High, 5mA-10mA makes it 1LM or dimmer at moonlight.

The minimum quantity is 1000pcs to get it started. That is what stops me from do it right now.

If the price $15.99 for D25WR without battery; $17.99 for D25WR with battery, how do you guys think?

Come on guys, I need some confidence!

Highly interested!!!

I’d certainly get at least one! (certainly if it has Type C, I probably won’t buy any more lights for myself with micro-USB) I got a HD20 and I really like it but as a full-time headlamp it’s rather heavy.

That sounds interesting to me - an inexpensive light that offers both red and white light! I’m a little torn on whether mode memory is ideal on it, though.
I find that without shortcuts, having a moonlight mode is less useful if you may need to cycle past the highest mode to get to it.

Expensive? You can get it in Alixpress for about 4$

Barry, if we're talking about $15.99 (fifteeeeeeen-ninety-nine!)...what are we waiting for? :-D

Can you divide the 1,000pcs into small variations of D25WR? Suggestions?

  • 500 pcs SST20 4.000K 95CRI + SST20-DR 660nm
  • 300 pcs SST20 2.700K 95CRI + SST20-DR 660nm
  • 200 pcs LH351D 5.000K 90CRI + SST20-DR 660nm

I would even fancy a mini batch of D25AR using XP-E2 amber ("amber" seems to be a quite orange yellow) and SST20-DR 660nm. Both tints work great in full darkness to reduce overstraining the eyes and to have less backscatter in fog. It would be quite unique too and a risk of loss of sales margin is quite low here. Just my thoughts... ;-)

I’m in?

[quote=Barry0892]
Let call it D25WR with SST20 4000K (or 2700K) + SST20DR 660nm is no problem. 3A current can make it 500LM roughly at High, 5mA-10mA makes it 1LM or dimmer at moonlight. The minimum quantity is 1000pcs to get it started. That is what stops me from do it right now. If the price $15.99 for D25WR without battery; $17.99 for D25WR with battery, how do you guys think? Come on guys, I need some confidence!

Yes, 1 for me

+1! Many good ideas there

I’d add the headband strap upgrade at whatever price Barry thinks that reasonable.

Considering XP-E2 PC Amber could be also beneficial, as PC Amber (phosphor converted) is also gentle on eye (not simple Amber, because that is inefficient, and as the emitter gets hot, it starts to lose output considerably - but in terms of driving the LED, PC Amber acts more like a white LED, than a monochrome Amber/Red):

My suggestion for the quantities:

100 pcs XP-E2 PC Amber + SST20-DR 660nm
200 pcs SST20 2700K 95CRI + SST20-DR 660nm
300 pcs SST20 4000K 95CRI + SST20-DR 660nm
100 pcs SST20 4000K 95CRI + XP-E2 PC Amber
100 pcs LH351D 5.000K 90CRI + SST20-DR 660nm
200 pcs LH351D 5.000K 90CRI + XP-E2 PC Amber