Coidak 9W E26 Dimmable LED Light Bulb, Warm - Cool White Color Temperature Adjustable, with 2.4G RF Wireless Remote Controller (Not IR, Can Bypass Obstacles), Incandescent Equivalent 63 Watt, A19 Lamp Various color temperature: You can change from warm white(2700K)-daylight(4500K)-cool white(6500K), by pressing either CT+/ CT- to adjust gradually, or change between warm and cool white directly by single clicking the sun/moon key, there are also preset 6 fixed color temperature for you to choose Adjustable brightness: Has 6 fixed percentage brightness(10%/20%/30%/40%/60%/100%) ; which you can choose your preferred percentage level by clicking up/ down key 2.4G wireless remote control: Can bypass obstacles to control the bulb, more advanced and sensitive than IR remote control, straight line remote distance up to 65.6ft, super long Multiple control: One remote can control 4 group bulbs simultaneously, per group bulbs up to multiple DIY function available: Can give DIY brightness and color temperature using the sun and moon key. Warm white light(2700K)in bedroom for relaxing or as night light. Cool white light(6500K)in study room for good sight. Daylight(5000K) in the living room for normal illumination. Long lifespan: With an astonishing life rating of 5000 hours. Aluminum material perfectly protect the LED light bulb from burning out easily as its excellent heat-dissipation. Compatible with any E26 connector type lights, such as table lamp, wall lamp, ceiling fixture, chandelier, pendant, floor lamp etc. Weight: 0.28lb Working temperature: -25-65C Control modes: 2.4G wireless transmission 1 x Dual-temperature Color &amp; brightness Dimmable LED Light Bulb 1 x Remote Controller 1 x User Guide Can bypass obstacles Remote control distanceup to 65.6ft It comes back to last lighting color and brightness when you turn it on next time, no need to set it again. Moon key -- default:night light Sun key -- default:cool white reading light