LED Pocket Projector Built-in 6,000mAh Battery – provides up to 3 hours of projection and doubles as a power bank for your mobile devicesUltra-portable – Measures just 4” x 4.4” x 1.2” (10.2 cm x 11.0 cm x 3.7 cm) and weighs only .75 lbs (342 g)Fully Capable – Up to 200 lumens brightness, with best-in-class short-throw (41” diagonal display at 1 m)The Fullest Multimedia Experience – HDMI/MHL input port and integrated ASUS SonicMaster-enhanced speaker Shop Modal header Where to buy AmazonNeweggTiger Direct Large, Bright and Clear Projections On-the-Go The S1 has a mercury-free, 200 lumens 30,000 hour lifetime LED light source that provides 100% NTSC color saturation and full color RGB projections, with instant on/off. With a footprint of 4 inches x 4.35 inches and weight of just 0.75 pounds, the S1 Mobile LED Projector is the perfect portable projector for mobile professionals that need to travel light. Built-in rechargeable 22Wh / 6000 mAh battery provides up to 3 hours of unplugged projection time and can also recharge mobile devices via a convenient USB port, even if the S1 is off. With a best-in-class short-throw ratio, the S1 Mobile LED Projector displays a 41-inch diagonal projection just one meter away from the screen, making it perfect for small spaces. Seamless Connectivity and True-to-life Sound The S1 features an HDMI input port to ensure compatibility with a variety of sources from laptops to media players. This port is also MHL-certified, allowing compatible mobile devices to simultaneously charge while outputting their display. In addition, the S1 provides exceptional sound through its exclusive ASUS SonicMaster-enhanced speaker, giving the S1 high fidelity sound that complements the visuals it provides for a truly cinematic audio-visual experience. Premium and Durable Design ASUS designers penned the S1's Zen-inspired lines and gave its sleek, modern chassis a stylish concentric-circle finish. Finished in aluminum, this premium design helped the S1 win a 2014 CES Innovations Award and a 2014 iF Product Design Award.