We spend a lot of time at my desk, most of that time staring at a big computer display. Eyestrain remains a problem when reading from a computer screen though, lighting is important, having a consistent source of light in the area as you're working on the computer is helpful. The primary purpose of our screen light bar is to improve lighting conditions. It does this in multiple ways. Because it’s designed to be positioned on top of a computer monitor, light shines down to illuminate the space in front — the work area. It uses an “asymmetrical optical design” that prevents that light from reflecting off the screen and avoiding reflectively glare off your computer screen. Specifications: Light source: 84 LEDs (42 Cool White LEDs, 42 Warm Color LEDs) Zero reflective glare off the screen CRI＞95 Ra Max 500 Lux in the center (height 45cm) 10 Adjustable brightness levels 3 Color Temperature: 6500K, 4000K, 2800K Power Input: 5V USB port (Computer/Monitor, USB charger, Power bank) Materials: Aluminum alloy LED Lifetime: more than 100000h Dimensions: L15.7 *W0.93*H0.78 inches Weight:0.5KG (1.1LB) Not fit Curved Monitors. Package content: 1 x light bar 1 x Mounting Basement 1 x USB Cable 1 x User manual