The Philips ergonomic LED display using 25% recycled materials & PVC-BFR free housing is ideal for eco-friendly productivity. LED's are solid state devices which light up to full, consistent brightness faster saving startup time. LED's are free from mercury content, which allows for eco-friendly recycling & disposal process. LED's allow for better dimming control of the LCD backlight, resulting in a super high contrast ratio. It also gives superior color reproduction thanks to consistent brightness across the screen.