Osram dsst natw 5 w840 gu10 4008321548979 the osram dsst natw is amongst the smallest of energy saving lamps with a very compact shape and high efficiency it has a low energy consumption 5w and a life time of up to 8 000 hours because the lamp has extremely small dimensions its most suited area of application would be in small designer luminaires and wherever compact and efficient lamps are needed other areas of application include high quality domestic and professional environments