Shape MR16 MR16 Cap - Base GU5.3 GU10 Rated Wattage 5.5 W 5.5 W Input Voltage 12 Vac 220-240 Vac Operating Frenquency 50Hz-50 KHz 50-60 Hz Luminous Flux 430 lm/450 lm/470 lm 420 lm/430 lm/450 lm Lifetime (hours) 25,000 hrs 25,000 hrs Switching Cycles 50,000 50,000 Start Time from 0% to 100% < 0.5 s < 0.5 s Power Factor 0.95 0.8 Working Temperature -20 C ~ 40 C -20 C ~ 40 C Guarantee 3 years 3 years Dimension W:50mm x H:46mm W:50mm x H:56mm LIGHT CHARACTERISTICS Color Warm White Warm White Color Temperature 2700 K / 3000 K / 4000 K 2700 K / 3000 K / 4000 K Color Rendering Index 82 82 Lamp Efficacy up to 95 lm/W up to 90 lm/W Lumen Maintenance Factor 70 % 70 % Beam Angle 60D 60D Dimming Type Non-dimmable Phase cut Dimming Color Consistency 5 Step MacAdam Ellipse 5 Step MacAdam Ellipse Wattage Equivalent to Halogen 35 W 35 W