Halogen bulbs can be dimmed, which is perfect if you want to adjust the lighting level at home. This particular model has a so-called R7s socket, so make doubly sure that it will fit.
From Amazon
Osram 747596 Energy-Saving Bulb R7S 48 W
OnBuy
Osram 64684 ECO 48 W Halogen Bulb, Warm White