Osram decostar 51 irc gu5 3 this lamp combines efficiency brightness and quality and this is with a life span of up to 5 000 h or 5 years with approximately 3 hoursday thanks to the innovative technology and infrared coating irc you can save a lot of electricity and therefore up to 65 in costs compared to standard halogen bulbs or you can achieve a significantly higher brightness when replacing with halogen bulbs of the same wattage up to 65 savings in costs through irc