3 Modes Happy Light Seasonal Affective Disorder Phototherapy SAD Therapy Lamp Simulating Natural LED Daylight Lamp for ACD Treatment Features: Compared to the other similar products,higher luminous intensity, unique shape, exquisite appearance. Specifications: Service voltage: 110-240V/12V 1A DC Power / third gear control: first gear 1.8W, second gear 3.5W, third gear 7.8W. Lamp type: 2835 Illumination: one gear 11000, second gear 22000, third gear 32000. Light color: white light Color temperature: 6500K Material: shell (ABS) + optical grade light guide +78 LED lamp. Whether there is ultraviolet radiation: no Distance and continuous working hours: 50cm/4 hours Button Angle: it can not be adjusted. Special function: No Timing: no Battery: no Specification: US/UK/EU/AU Net weight: 630g Gross weight: 730g Luminescent window size: 226*131mm/8.9*5.16" Product size: 277*162*18mm/10.91*6.38*0.71" Outer box size: 375*195*55mm/14.76*7.68*2.17" Attention for the first time of use: high luminous intensity, not suitable for those who are not comfortable,do not look at products. Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement.