It introduces high brightness EPISTAR chip as its side lighting source, and USA original CREE 5W as its top lighting source. It is double constant current circuit designed, which allows the two sets of lighting sources to drive independently, and in this way the light efficiency can be maximized effectively. Lighting source: 4PCS 1.5W Epistar Chips + 1PC 5W Cree Chip Emitting Color: white,warm white,blue,red,green,yellow Operating Voltage: AC10-30V Current at 12 Volts: 0.32A Luminous Flux: 420Lm Beam Angle: 360° Size: 61*Φ18mm Weight: 35.7g Certification: CE,RoHS