CMVision light bulbs are designed to be a direct replacement for 40-watt incandescent light bulbs. Featuring more than 80% energy-saving and 40,000 hours lifetime, CMVision bulbs can save you significant electricity and maintenance costs. Direct Replacement Designed for 12V AC power input and standard GU53 medium base, CMVision bulbs can be easily installed on existing lighting fixtures with GU53 mounting sockets.