The MMU is the new benchmark for ultra compact, insanely bright tactical and duty flashlights. It is the smallest flashlight in the world to use the SST-90 emitter.
It features both current and thermal regulation - this means it can take serious abuse and be exposed to harsh conditions, but it will automatically control its output to protect its own guts. That means you don't worry about your light - you just use it.
The MMU also runs off one of our own special lithium-ion rechargeable batteries. It's called a 26650, and it packs enough energy to power the S12 at 800 lumens for an entire 90 minutes.