I did a review here:
The “Built in Charging” is in fact a Micro USB port installed in each special 18650 battery. So the batteries have to be removed to charge them.
This also makes the battery extra long. Spacers are needed to use flat top or even most button top batteries.
It has a great UI for S&R. Set it so that it always comes on in low, a quick press steps it up to Med or High.
Great beam pattern too - thinks I.
BUT - The darn button is just about impossible to find when wearing gloves! Something that S&R is going to be wearing most of the year in the UK?
The new Sofirn Q8 Pro looks very interesting. Lots of light and USB-C charging.
But - a fiddly interface. Perhaps it could be set so it only uses a few steps instead of a ramp.
The soda pop can lights I find are not pleasant to hold for long periods.
The Sofirn SP70 with 2x26650 is awfully hefty. Good interface for noobes and plenty of light. No built in charging.
But how hard is it to carry extra batteries? I mean we did it for years when Maglites were king.
The other posters are right about output and throw. You want some kick in the center of the beam. With a full flood (like a zoomy) the near field brightness washes out everything else and renders stuff farther away hard to see.
All the Best,
Jeff