[POCKET PROJECTOR] - Crosstour S100 comes with mini size (3.54*3.14*1.57 inches) and lightweight that pico design is easy to carry and you can enjoy the fun with your family and friend at home. You don't need to go to a crowded cinema any more. [BUILT-IN BATTERY] - Built in 3000mAh rechargeable battery brings you an entire 3.5-4.5 hours movie on one full charged. It also has a USB 5V out port that can be used as a power bank to recharge your electronic equipment. [ADVANCED DLP TECHNOLOGY] - With Advanced DLP technology (Digital Light Processing), the 1080p resolution supporting, 20,000 hours LED lamp life, the projector will brings you a professional cinema enjoyment with its clear and realistic picture quality.