I know the differences between the cooler 1A and neutralish 3C, but what is R51A?
Eagle Eyes F10 CREE XM-L2 U2 R51A/1A/3C Turn Angle LED Flashlight
Xpg R5 1A maybe?
Looks like a different emitter option for an Xpg-r5 1a that just isn’t enumerated properly.