led world Cree Single-Die XM-L T6 LED White 6000K Chip 16mm Round Base for DIY Maximum Drive current: 3000 mA(10w) Maximum LM: 1000LM at 3000 mA Typical LM: 300LM at 700 mA Voltage: 3.2-3.7V Low thermal resistance: 2.5C/W