Ledcourtyard bulb 01 LED: Taiwan LUMENMAX 5630SMD; 18lm / pcs; 144pcs LEDs, high quality led insure HK-R80-35W 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:ledcourtyard bulbLuminance (5300K):320 LUX @ 1Mitem:HK-R80-35W:125 LUX @ 2Minput voltage:AC 85v- 265v:35 LUX @ 4Mdriver output voltage:DC57VCCT:2800k-3200k WWdriver output current:560mA:4700k-5300k PWFrequency Range:50Hz/60HzColor Index(CRI):>76LED Concumption32wJunction Temperature(JT):70°C±10%(Ta=25°C)System Consumption:35wWorking Temperature:-30°-50°LED Qty.:144 pcsWorking Humidity10% 90%RHLED type: LUMENMAX 5630SMDStorage 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:E27 / E39 / E40System Resistance(Rja): 1.4°C/Wsize:D80*L242mmluminous flux:2000 WWnet weight:0.7kg/pc:2200 PWpacking 10pcs/carton:110*110*330mm:2300 CW:250*360*560mm