This adjustable fluorescent tube is available in three color temperatures ranging from 3000 to 6500k (cool white, warm white, warm yellow), four brightness levels (900 / 2860 / 5000 / 7200 / 10000 LUX) and four timers ( automatic shutdown after 15, 30, 45 or 60 minutes). Adjust your lighting with maximum comfort and customize it according to your different needs. Note that you should not look directly at the lights [Suitable for dark season] This fluorescent lamp uses full-spectrum light with a light intensity of approximately 16,000 lux to simulate sunlight during dark autumn and winter days when there is insufficient light. (Please note that you should not look at the lights directly). There are three touch control buttons: power button, brightness button and timer button. Just click the corresponding button to change the color temperature, brightness and timer. Enjoy a UV-free, flicker-free and glare-free analog sunlight experience. Note: This product must be connected to a power source before use [45° foldable legs] for table or stand suspension. This solar light features a 45° foldable stand with mounting holes for easy use and storage on the table and can be hung on the wall if needed. It is a great gift for people with limited sunlight, the elderly, and office workers. The ultra-thin and lightweight design of the analog daytime running light is compact and portable, making this solar light small and portable to fit on a table or backpack. Ideal for home, office, home and travel.