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Capable of projecting a 100” image with only 1.7m, the Acer K138STi is a portable short-throw LED projector enabling people to enjoy movie or have work presentation on the go. The K138STi has remarkable portability thanks to its small size, built-in battery, DTS sound speakers, and the ability to directly play content from USB drive. Equipped with LumiSense+ light sensor, the K138STi can automatically optimize brightness and color saturation based on ambient lighting conditions, ideal for carrying from place to place. The K138STi specially stands out with its organic design that presents the spirit of harmony and elegance.