2 in series, and 4 of those parallel. This determines driver design to power the leds. You can have more throw for less $ than this light, but you’ll most likely have a smaller hotspot, and much less bright spill.
For example a single emitter XHP35 HI light with decent sized reflector like the Atrolux MF02, or the Imalent RT35. Both are in the order of $80 with coupon.
And for an even smaller hotspot with less bright spill there’s the upcoming Noctigon K1 discussed here: Emisar D1sV2 respectively Noctigon K1 - #48 by Hank_Wang
P.S. We don’t know for sure the HT70 actually does 1500m / ~550klux
The ad shows that it uses NarsilM. If accurate, then yes, it functions the same as the FT03. I would want some verification that it uses NarsilM, though. Haikelite have tried to make their own ramping software in the past.
My guess is the LED was not mounted on the heat sink with enough solder paste. Same thing that happened to my TN32 on January 31,2014! Exactly 6 years ago,just looked it up. My Grandmom-98, passed away 12 years ago today.