Ledcorn bulb 01 LED: aiwan LUMENMAX 5050SMD; 18lm / pcs; 224pcs LEDs, high quality led insure HK-R90-40W light with high brightness and long life span. 02 Driver: we use Taiwan technology and Japan or USA hardware to make the driver. The efficiency≥95% & PF≥98% . this make the light easy to pass TUV EUP test. 03 and 04: heat sink/MCPCB the heat sink/MCPCB are made by aluminum, the heat is easy to dissipate. This is very good for the leds, and ensures the light with long life span. 05 PCB board: with UL 06 base(E40/E39): E40/E39/E27/B22 with UL, the base is made by fireproof plastic. Main specification name:ledcorn bulbCCT:2800k-3200k WWitem:HK-R90-40W:4700k-5300k PWinput voltage:AC 85v- 265vFrequency Range:50Hz/60HzColor Index(CRI):>76LED Concumption37wJunction Temperature(JT):70°C±10%(Ta=25°C)System Consumption:40wWorking Temperature:-30°-50°LED Qty.:224pcsWorking Humidity10% 90%RHLED type: LUMENMAX 5050SMDStorage Temperature-40°C 85°CPower Factor(PF):0.98(85v-110v)life span:>50000 hours:0.92(200v-240v)heat kink:aluminumLamp's Efficiency:>90%light cover: PCHarmonic Distortion:<20%Light holder:E39 / E40System Resistance(Rja): 1.4°C/Wsize:D90*245mmluminous flux:3500 WWnet weight:0.9kg/pc:3650 PWpacking 16pcs/carton:120*120*300mm:4000 CW:500*500*320mm