ThePhilips Corepro LEDspot GU10 PAR16 4.6W 390lm 36D – 840 Cool White | Replaces 50Wis the perfect replacement for a conventional 50W GU10 halogen bulb that has an 840 – Cool White colour code. This LED spotlight bulb has a diameter of 50 mm and its two pins are 10 mm apart. The bulb works with 230V and does not require a transformer. Switching to LED offers many advantages!