The MINI3 is a tiny keychain EDC light with wide voltage design which could be powered by 10440 600mah or AAA battery (NiMH or alkaline) 1.2V/ 1.5V/ 3.6V/ 3.7V/ 4.2V and dual output settings ranging from 100 to 350 lumens. There is just one mode for MINI3 keychain light, twist the head for turn on/off.