LightJunction.com products video reviews - TC-R2 is a titanium version of popular JETBeam RRT-0 flashlight (without extender for AA battery). TC-R2 uses the latest Cree XP-G S2 LED, gives an amazing 310 lumens from a single CR123 cell. Its infinite brightness ramping ring is a state of art technology -- you can switch the brightness from as low as 0.003 lumens all the way to 310 lumens by simply rotating the ring! TC-R2 is a limited edition light with only 500 pieces total worldwide. This light is truly a must have for flashlight collectors!