I am trying to find a device that will work for my brother who for now is very picky. He is a heavy smoker so I know a cigalike will not work for him. He wants something small and automatic.... I know! I saw somewhere someone mentioned a mini that was an automatic but I can't find one. Even if I can find a mini that is not an automatic that is good quality it might work. Does anyone have one? Know how long these small batteries last?