... heat-releasing.Technology Data of SMD E27 LED BULB: Item NameSMD E27 LED BULBBrand namewell madeInput VoltageAC100-260VWork Frequency50-60HZLamp ... %Operating lifespan50,000hoursWarranty:2 years:MaterialAluminumLED brandCREE,SSC,NICHIA,EDSION,EPISTAR,Bridge Lux,Semi Leds.CertificateCE& ROHS, UL ApprovalInner package1pc ... by TNT,DHL ,UPS or EMS.Payment of led SMD E27 LED BULB:1.T/T in advance,2.30% ...