... PSE,UL,ROSH Short delivery time LED BulbsSpcification:1 Ultralow power, ultralow cost: low power consumption, regular features of life ... . 6 constant current output.7 constant-current DC power supply, there is no stroboscopic. Monochrome technical parameters ... IPIP44IPPrinted circuit boardMaterail MCPCBMmSpanlife HOUR25000HOURPower factor 0.58 Power efficiency 0.79 Applicantion1 Widely used in products ...