SAD light therapy lamp produces brighter but soft light to treat Seasonal Affective Disorder, keep you in good health mentally and physically, lift your sad mood when lack of sunshine.It's just like a window to get your sunshine. Product name: SAD Lamp Therapy Light Voltage: 5V USB Color Temperature: 2800K-3200K(warm light) ;6000-6500K(white light). Illuminance:2000-12000LUX;6000 LUX(warm light);10000 LUX(white light). Dimming Level :3 levels of brightness adjustment Timing Function: 10min/20min/30min Colour:White Material:ABS Size: 235 x 142 x 16mm Package Contents: 1 x LED therapy light 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.