Led bulb reflector lamp energy rating a power 4 watt energy consumption 4 kwh1000h series philips master ledspot equivalent to light bulb 35 w socket gu10 voltage 240 v light colour neutral white light output 280 lumen luminous intensity 600 cd colour temperature 4 000 k beam angle 40 lifespan 40 000 h bulb shape reflector variable intensity dimmable colour rendering index ra 80 ra length 55 mm diameter 50 mm average annual electrici