The Smart Home ceiling light fixture made of white metal with its round illuminated surface made of white plastic with a glittering crystal effect can be controlled via Bluetooth either using the free app or the separately available remote control (EGLO 99099); The starlight ceiling lamp makes use of the ZigBee standard which allows it to be controlled wirelessly via your WiFi-network or compatible vocal assistants, such as Alexa Should you already use a vocal assistant with an integrated bridge (for example Amazon Echo or Echo Plus), you can easily and conveniently interact with the intelligent ceiling light fitting by voice and switch the light on and off remotely, when you are not at home The LEDs emit pleasant light (4 x 4.8 watt, 1900 lumen); Dimensions: diameter: 38 cm/ 15 inches, height: 7 cm/ 2.8 inches; This product is a containing product with a light source of energy efficiency class F; containing products are lighting fixtures that can be disassembled for separate inspection of the containing light source(s)