Description: Dimming:3 lighting dimming modes and 9 adjustable brightness levels to meet all your Computer monitoring lights provide 9 different brightness options (20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%), you can according to your different needs, press The "+" or "-" button is easily dimmed. Easy and convenient to install and use. Color change:Adjust the color temperature to create different atmosphere lighting (warm white, natural white and cold light) for you.The warm white color relaxes you and is also suitable for watching videos or playing games.The natural white color can illuminate your work area well and will not make your eyes tired.Cool light allows you to concentrate and improve work efficiency. Multi-purpose: Can be used for dresser lighting, laptop working or bedside reading in study, bedroom, etc. Size:Approx.260x20x20mm/10.24x0.79x0.79inch. Specification: Material: ABS LED model: SMD3014 Number of LEDs: 54 Power: Maximum 2.5W Voltage: DC5V (USB interface) Life span: more than 35000 hours Installation: step 1. Insert the rigid strip of the goggles into the support frame. step 2. Click the holder into the center of the display. step 3. Insert the USB interface into the computer's USB port or 5V adapter, turn on the power, and then press the switch on the dimmer Package Includes: 1 Piece Computer Screen Lamp 1 Piece Ballpoint Pen : The laptop type of 26cm is not recommended for desktop computers because the thickness of the clip is only 0.2 to 0.4 inches. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2cm error in size.