Hello! Lumintop L1C user here! It's a nice light, pretty good throw for a tiny light, the reflector's smooth and quite deep, it really maximizes the XPG R5 emitter.
It takes CR123 primaries or RCR123s which are unprotected. You can use protected RCR123s but you lose the ability to change modes. So whatever mode you had it on, will be the only mode it will run on.
Pretty tight light, i've been EDC'ing mine for about a year now.
It has a cheaper cousin of similar size and throw, its the P1C, for 20 bucks cheaper, but you get only two modes and no Strobe.
Oh yeah, the L1C has SS on the bezel and on the tail. the P1C doesnt.