ASUS ZenBeam E1 is a TV-sized screen in your pocket. Designed with compatibility in mind, this palm-sized projector has an HDMI/MHL input to connect to everything including PCs, smartphones and media streamers. At the heart of ASUS ZenBeam E1 is its bright Eco-LED light source with long lifespan. DLP IntelliBright technology efficiently boosts brightness and contrast, while lowering power consumption. ASUS ZenBeam E1 has a built-in rechargeable battery that gives you many hours of cable-free projection time. Auto keystone correction automatically eliminates trapezoidal images that can result from angled projection, achieving a perfect rectangle every time.