One bulb, three settings. Works with your existing switch. - Now you can get the ambiance you want without having to install a dimmer switch. The Philips SceneSwitch bulbs work with your existing light switch. All you have to do is screw in the bulb, and flip the switch to toggle between 100%, 40%, and 10% brightness. Available in soft white and bright daylight. Super Slim Design - Slim design is ideal for low-ceiling rooms, sitting flush against the surface. Easy to Clean - Smooth and easy-to-clean materials mean your home always looks attractive from floor to ceiling. Energy Saving - With up to 90% less energy than traditional sources, switch to Philips LED and save money on your household bills. Long Lifetime - Lasts up to 20,000 hours. Your home is worth investing in - let Philips help.