You might want to grab your sunglasses, your sunscreen, and a bucket hat because this 3W RGB LED is so bright it's like taking a beach vacation ON THE SUN. Maybe that's an exaggeration, but these are incredibly bright.
This is a 3W RGB LED, basically the same thing you've got on a little 5mm breadboard version, but with huge chunks of silicon (metal core PCB) that can handle large currents. Each of the red, green, and blue dice can handle continuous about 350mA current draw (with peaks of 1000mA). The light output is 110 lumens (110,000 millicandela) total.
Each order comes with one 3W LED on an aluminum PCB/holder/heatsink. Please note that even though the PCB acts as a heatsink, 3W is a lot of power to dissipate as heat so you will need an additional heatsink or fan or other cooling mechanism!