1. no heat sink design 2. New invention patent in USA 3. CRI above 90 4. CE ROHS 5. 3years warranty Model2B35/H/6500k clearInput Voltage100V-240V AC50-60HZPower2WLuminous Flux220 lmColor Temperature6500 kCRI(Ra)≥ 90Beam Angle360°BaseE14Lamp Body Materalclear glass coverBrand NameLedisonWorking Temperature(°C):-40 to 50 Life time30000hourStandard Warranty3 YearsCertification:CE;RoHS(UL,PSE,GS,SAA ...