Description: No screen glare: It has an asymmetric optical design, which only illuminates the table, not the screen, and avoids reflected glare. Customizable : dimmer, the light brightness can be adjusted between 10%-100%; for the color temperature, there are warm white, natural white and pure white to choose from. The memory function can memorize the color and brightness of the light, which can be adjusted freely and easy to maintain personal settings. Easy to install and use: No screws or tape are needed to damage the monitor. The clip is suitable for any monitor with a thickness of 0.4" to 1.2" (1 to 3 cm). The lamp can be used with a computer USB port, a mobile power supply and Other DC5V electronic devices with USB sockets. Save desktop space: The space-saving design makes your computer monitor light steadily located on the top of the display, saving valuable space on the desk, very suitable for limited working space in the office or home. Eye care: 3 color temperature options that provide focus and comfort. Warm light makes relaxing cold light work, thereby improving work efficiency. Specification: Material: ABS Colour: Black Size: 40cm / 26cm(Optional) (Suitable for: laptop) Light source: cold and warm dual-color LED Light: positive white light, natural light, warm light Power: 3W Power input: USB Package Includes: 1X Display Lamp 1X Manual 1X Storage Bag Note: Conversion: 1inch=2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!