BenQ ScreenBar Plus Monitor Hanging Light ScreenBar Plus I've used this for three years. I'm selling it because I'm switching to a curved monitor. It helps prevent eye strain. There are no operational issues, and there are no noticeable scratches, but please understand that this is a used item. 【Automatic Dimming】: Thanks to the light sensor built into the desktop dial, the brightness level of the ScreenBar Plus e-reading lamp automatically adjusts. You can also control the dimming manually. 【8 Color Temperatures & 14 Brightness Levels Adjustable】: You can choose from 2700K warm light, 4000K natural light, and 6500K white light. Illuminance: 1000 lux in the center (height 45cm), 74*35(cm)/ 500 lux 【Mood Lighting】: Color temperature is also adjustable, providing concentration and comfort. Relax with warm-colored light and improve work performance by concentrating with cool-colored light. 【Space Saving】: With a specially designed clip that attaches to the top of the monitor, it is stable. The compatible monitor thickness is 0.4 inches (1 cm) to 1.2 inches (3 cm). The clip is a hook-on type, so it can be used depending on the shape of the monitor. USB power is supplied, and it can be used simply by connecting it to the USB port of a monitor or computer, or a mobile phone charger, without increasing the number of outlets. 【Screen Reflection Control】: The asymmetrical optical design eliminates reflections from the screen, making it easier to see. The lighting angle can be adjusted, and it is designed so that light does not enter the eyes.