Panasonic CT-27SX12 27" TV with PureFlat Screen 27-inch Tau PureFlat screen with Invar mask screen minimizes reflections and color shifts Digital Velocity Modulated Scan improves definition at picture edges Motion-adaptive three-line digital comb filter sharpens images, reduces "dot crawl" BBE High-Definition Sound improves speech intelligibility and restores musical dynamic range Channel lock and game guard let you control set use, and a programmable timer powers the set on or off at specified times