Feature: 1. Non Glare and Anti Flicker: Scientifically designed to only illuminate the keyboard area, reducing screen glare and flicker. Energy efficient, soft and even lighting with a broad illumination range, protecting your eyes from harm. 2. Multi Lighting Modes: Easily switch between various brightness levels and 3 color temperatures (3000K‑6500K), with a CRI≥90 for a vibrant work space. Flexible 25 lighting modes cater to different lighting needs. 3. USB Powered Light Bar: Efficiently light up your keyboard area with 84pcs quality LED chips, reducing screen reflection and glare. Protect your eyes from blue light and minimize eye strain. The USB plug can be plugged into a USB device to power it. Push switch design, USB cable length: 78 inches. 4. Space Saving Design: Save over 50% of desktop space with a stable knob clamp that secures the light bar on screen tops. LED screen light bar clamps screens up to 1.18 inches thick. Adjustable up to 90° for optimal lighting angle. 5. Wide Compatibility: Constructed with premium aluminum alloy, lightweight and robust. Suitable for most computer monitors and laptops. Length: 20 inches. Ideal for various settings with a wide color temperature range. Specification: Item Type: Screen Light Bar Material: ABS, Aluminum Alloy Shell Color: Black Product Size: Approx. 83 x 26 x 500mm / 3.3 x 1 x 19.7in Rated Power: 5W Rated Voltage: 5V/1A Power Supply Interface: USB C Light Source: LED asymmetric light source Color Temperature: 3000K- 4000K- 6500K (three color adjustable) Dimming: Stepless dimmable Switch Type: Touch Timing: Timing 60 minutes light off function Function: Quick reading mode. Package List: 1 x Computer Screen Light Bar 1 x USB Cable