It has XGA native resolution, 1.1x optical zoom, and is capable of displaying both 4:3 and 16:9 aspect ratios. The projector also features a 2000:1 contrast ratio with BrilliantColor technology for accurate color reproduction. The PJ557D has a lamp life of up to 4000 hours and supports a variety of input signals including 720p and 1080i for high definition projection. It includes composite, S-Video, and component connectivity as well as a USB port which the PJ556D lacks. The projector includes dual integrated 5-watt speakers to provide accompanying sound and also offers a direct-off feature. The PJ557D comes with a remote control, soft case, and a 3 year limited warranty.