Osram led star mr11 20 30deg 37 w827 gu4 the osram led star mr11 20 30deg 37 w827 gu4 has an extremely long life of up to 15 000 hours the lamp is robust against vibrations is mercury free and has a high colour consistency areas of application for this lamp include museums shops small designer luminaires and outdoor use in outdoor luminaires minimum ip65 this lamp is not dimmable dimensions for this lamp are as follows overall length 390 mm diameter