Euri's 3-stage wattage selectable (4W/8W/12W) A19 replaces conventional yet inefficient bulbs by delivering more brightness for less energy used. With lower energy consumption levels you will be able to experience considerable energy savings throughout the years while enjoying a longer bulb life span. Moreover, Euri's A19 design reduces internal bulb heat providing greater durability and constant bulb performance. Look for Euri's 3000K model for Soft White, 4000K for Bright White, and 5000K model for Cool White. With Euri's A19 bulbs, enjoy our signature features such as Instant-on, Energy Efficient, and Enclosed Fixture Suitable. 3-way dimming is supported only when installed in an E26d socket. Dimming control is achieved through the rotary or pull switch integrated into the socket.