Download an App to your cellphone and you will conveniently control this E27 7.5W Warm White + RGB Light Smart Dimmable WiFi LED Bulb. It is not a common light bulb， simply supporting daily lighting function. For this recommendation， it is really a high-tech product with WiFi function. By correct connection， you can control bulbs up to 50pcs simultaneously. Its dimmable design allows you to randomly adjust the brightness for meeting your real demands. It emits soft and mild warm white light as well as RGB effect， helping to create romantic atmosphere on special occasions!                                    Features             A smart LED bulb with built-in WiFi function， suitable for many smart phones<br> Dimmable design for random adjustment<br> It sends out warm white light as well as RGB light for creating romantic atmosphere<br> Rectangle shape， delicate workmanship， superior material， high brightness and good reliability<br> Pass through CE， ROHS authentications<br> Can be easily controlled by a download App on the phone  <br>                                                            Specifications            Holder    E27    <br>Weight    4.23oz / 120g    <br>Bulb Material    Milk White PMMA    <br>Bulb Size    (4.29 x 2.3)" / (10.9 x 5.85)cm(H x Dia.)    <br>Bulb Color    Warm White    <br>Shape    Rectangular    <br>Working Voltage    100V～264V，50/60Hz    <br>Color    White    <br>Wattage    7.5W    <br>Power Source    Corded-Electric    <br>Type of Bulb    LED !#!amp!*! RGBW    <br>Light Luminous Flux    Warm White:500LM～550LM    <br>Color Temperature    2700K～3200K    <br>Bulb Features    Dimmable    <br>Lamp Power Factor    PF!#!gt!*!0.6    <br>Suitable Phone OS    IOS 4.3，Android 2.3.3 Devices or Later    <br>                                                                Package Includes            1 x LED Bulb<br>1 x Manual<br>                                                            Extra Info            LED bulbs advantages  How to choose LED light bulb  Base type