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Part of the first release by Dell for energy efficient monitors, this LED-backlit flat panel monitor features an ambient light sensor and dynamic dimming technologies to reduce power consumption. There are several modes on this model for energy efficiency, as well as an on-screen power usage gauge (that displays power usage in terms of relative... i.e., 10 / 10 blocks for standard, 4/10 for Energy Smart). The beauty of the LED backlit is that there is minimal backlight bleed, and combined with the 16:9 aspect ratio, makes it perfect for watching videos.