Go to the Dereelight website or Flashlight Connection and have a look at the Dereelight CL1H light. They can be run using 2 cr123 cells, and you can select your choice of emitters such as XM-L T6, XM-L T3, XP-G R5, or XP-E R4, depending on the amount of lumens or throw or tint that you want. They are slightly larger than the sc600's, but still a compact light. I do not have this light, but do own several other Dereelights, which I consider to be of excellent quality.