[2021 upgraded]smart light bulbs(pack of 4), 3stone 100w equivalent wifi led color changing bulb dimmable 2700k-6500k rgbcw, works with alexa, google home 2.4ghz only, a21 10w e26 tunable white no hub 3stone <p><b>better performance with less consumption</b><br> <br> better energy saving performance, this 10w led is equivalent to the 100w traditional incandescent with up to 80% less energy consumption. <br> estimate 250000 hours product lifespan, reduce re-lamping and maintenance frequency.<br> <br> <b>smart rgb colour control to suit your mood <br> </b><br> use the free “smart life” app installed in your smart phone or tablets to change the color you want based on the rgb circle showed in the app. and the color brightness can be changed from the dark to bright.<br> <br> <b>reliable quality & warranty</b><br> <br>top quality and safe operation, does not contain any mercury, uv, infrared or other deleterious radiation. it will do no harm or fade to your fabrics and furnishings, suitable for use in damp locations.<br>we are so proud about our product quality so we promise 3-years warranty. contact seller if you meet product peroblems, we promise you get perfect service and 100% satisfaction. <br> <br> <b>specification</b><br> <br> input voltage: ac 120v<br> power: 10w<br> lumen/kit: 1050 lm<br> led quantity: 21led+8rgb frequency input voltage: 60hz <br> led current: 140ma led color: rgb + white<br> base size: 27mm <br> wifi mode:802.11b/g/n<br> wireless standard: wifi 2.4g <br> working temperature: -40°f-112°f<br> color temperature adjustment range: 2700-6500k+rgb<br> lamp lifetime: 250000 hours<br> </p> <p><b>regulatory</b><br> <br> etl certified <br> <br> <b>package include:</b><br> <br> 1 x 10w wifi led bulb<br> 1 x user manual</p>