The Acer High Definition Series is a high performance line of LCD monitors for 2009 and is a step up from Acer's Excel Series. The series offers monitor sizes ranging from 21.5" to 24" with a widescreen TFT LCD, native resolution of 1080p, and 16:9 aspect ratio. It is designed with a black chassis that has a tilt screen function, detachable footstand, and is wall-mountable. The High Definition Series features Acer's TN panel technology as well as CrystalBrite technology in the H233H and H243H models. It comes with integrated speakers and includes VGA, DVI, and HDMI connectors for providing full high definition picture quality suitable for HD gaming and entertainment applications. The series is also Energy Star qualified for higher efficiency and comes with a 3 year limited warranty.