Fangrui Product Details Flame Retardant Pc Case Use A High Quality Flame Retardant Pc Case, Which Is Sturdy, Durable And Corrosion Resistant. The Internal Circuit Uses A High-strength Double-layer Fiberglass Board With Stable Performance. Direct Speech Control Without Networking Free Hands, Let The Light Understand You.will Listen To The Voice Of The Lamp Head , Change Color Requires Three Color Bulbs To Change Color Oh Labor Saving Convenient When You Are Lying In Bed And Ready To Go To Sleep, But The Light Is Not Off, You Can Turn Off The Light With The Speech Control While You Are Lying In Bed. Really Convenient And Practical E27 Socket Adapter! Easy Installation Suitable For E27 Screw Bulbs, Easy To Install And Use, Easy Installation And No Tools Required To Install, Screw Into Existing Socket, Suitable For Home And Indoor Use. 5 Meters Of High Sensitivity And Recognition Of Environmental Noise 60db Below, 5 Meters Of Normal Sound And Speech Speed Can Be, If In A Quiet Environment, The Lower Is Ok, Farther Distance, Depend