Details of USB Smart LED Lamp: Smart:Voice control turn on/off,voice control change color (white.warm.dichromatic 3 light color mode) Easy Use: USB Plug and Play, Built-in voice control chip.no network bluetooth or cell phone required. Portable: Product size 310mm(12.2inch)*83mm(3.26inch)*18mm(0.71inch),only 66g weight, body made of hose material which can be bent, Easy to carry anywhere in your pocket. Energy Saving: Led lamp only 1.5W,Dont worry about power consumption. Voice Command: Light on(Please turn on the light, Turn on the light, I’m back),Light off(Please turn off the light, turn off the light, go out, go to sleep),Change color(Change color)