Mfg Part # = 4431HE1. The Lenovo L1900p monitor offers a thin frame design that complements the ThinkStation, ThinkCentre, and ThinkPad systems. With Light Booster technology, mercury content is reduced by 50% and power consumption by 30%. The incorporated ThinkVantage design enhances usability for an intuitive and easy to use monitor. The Electronic Product Environmental Assessment Tool (EPEAT) rates the ThinkVision L1900p in the Gold category making it one of the most environmentally friendly monitors available today(1). The Lenovo ThinkVision L1900p enables you to be environmentally friendly without compromising performance. The L1900p includes attachment for optional the ThinkVision Soundbar(sold separately). It is available in business black. (1) As rated by http://www.epeat.net