CREE XM-L U3 1A LED Emitter With 16MM Aluminum Plate Borad
Color Temperature: 6700~8000K
Current: in Max3.5(2.8A is the best working current)
Working Voltage: 2.9V~3.5V
Diameter : 16MM
Good quality on all the ones I've gotten(~10) -Quite powerful, don't look into it even without lens .. It'll hurt your eyes. -Double pads for positive and negative terminals makes for easy wire-routing in more advanced setups.