he optical design of the e-reading lamp is asymmetrical, precisely illuminate the desk, do not cause glare, make sure the screen does not reflect, protect the eyes and reduce fatigue of the eyes. Using it at night does not affect other people. The clip of the desk lamp makes it easy and stable to attach to the monitor. No screws or tape required, there is a silicone pad on the clip to prevent the product from slipping or scratching on the computer during use. The screen desk lamp has 3 color temperature levels, warm light (2800-3200K), white light (4000-4500K) and cold light (6000-6500K), each color temperature level has 10 brightness modes, 10% -100% adjustable brightness, 180 degree beam angle. Any USB port can power the e-reading light. It can be connected to a computer, a mobile phone charger or a power bank Storage function After switching on, our E-Reading screen light restores the last used settings for brightness and color temperature.