This one has had 5X5mm leds which light output was awful.Now has a XR-E Q3 with an AK-47 driver with 2 MC7135 , 700 mA at H...the emitter is thermally glued to a 2mm thick aluminum piece...the light now is very usable despite the blueish tint...first tried with an Osram diode warm tint 1 MC , 350 mA, as the difference in output is not very noticeable this mod would last until the hardware store open, need some glue sticks to put a lens and swap the emitter again