Coupled with a higher luminous efficacy up to 98lm/W, the oval-shaped 2,700K lamp delivers a brighter and cooler illumination. The 2,200K option, in oval or sphere shapes, has a semi-transparent glass cover, which emits a warmer and dimmer light. Both options have a 100%-10% linear dimming version. Heat generation is also lower than incandescent lamps. With an average rated life of 15,000 hours, the lamps are durable and easy to install. The accessories include an external housing in gold, silver or brass.