The lamp is considerably larger than a conventional halogen-G9. But they fit me just as in the desk lamp. The brightness is uniform but the 450 lumen seem to me very optimistic. I found them relatively dark compared to a 40 watt halogen bulb. In addition, the light color is more greenish-bäulich place warm white. Due to the insufficient brightness for me I have returned the lamp. Refunds from suppliers BLY Power went smoothly. The delivery by the way took a few days, as is well-supplied directly from China.