Although slightly larger than halogen bulbs with pin socket, but this only stands out when the lights are off. For this, the light color is very pleasant - almost indistinguishable without direct comparison of halogen, the brightness I'd just under 35 watts lane (based on halogen). Have thus 20 35W halogen bulbs replaced in my practice -. With an average of 40-45 hours burning time / week results in a savings of 25-28 kWh / week. Since the purchase price of just under 9 euros expects soon. Although Previously fell 1 pear after a few weeks, but a 5% failure rate still find acceptable. Absolute buy recommendation.