Specifications: Use voltage: 110-240V 12V 1A DC Power third gear control: one gear 1.8W, second gear 3.5W, third gear 7.8W Product size: 277 162 18mm Light window size: 226 131mm Illumination: 1st gear 5600, second gear 11000, third gear 32000 Color temperature: 6500K Is there ultraviolet radiation: no Placement distance and continuous working time: 50cm 4 hours Thank you very much for your trust and support, and I wish you a happy life.Thank you for your support, we will strive to do better. If you have any questions, please contact us in time, we will reply to you within 24 hours. SAFE AND NATURAL: Non-invasive, drug-free and 100 UV-free. It is the perfect product if you are insomniac, fatigued, sleep-deprived or working in shifts. Moreover, it helps you get your energy back during the short and gloomy winter days!. PERSONALIZED SETTINGS AT 10.000 LUX: The bright light therapy lamp provides 3 brightness levels and the function to set up a counter timer up to 60 minutes for maximum comfort. Experience the full spectrum light, which delivers up to 10,000 lux of intensity for an effective light therapy session. ALL-NATURAL SLEEP IMPROVEMENT LIGHT - This sleeping aid light can help you improve your sleep quality within 14 days! Fall asleep and wake up feeling naturally refreshed. Enjoy better quality sleep benefits of this natural sleep solution without depending on sleep aids such as pills, melatonin supplements, or medicine. IMPROVE ENERGY AND MOOD: Enhance energy levels and alertness while optimizing your natural body rhythm to your lifestyle without the need for energy drinks or caffeine pills. In as little as 30 minutes of exposure to the bright light, you can feel energized, refreshed, and ready for that big meeting or a much-deserved night out.