【Pocket DLP Projector & Large Screen】 The M4S projector adopted advanced DLP technology, delivering more vivid color and sharper images than other normal LCD projectors. 100inch big screen, enjoy a movie night with your friends and family, anywhere! 【Mini and Portable Design】 Compact and fashionable design, Ideal gifts for friends and family. Size: 4.13 * 4.13 * 0.98 (inch). Weight: 0.6lb. Can be easily carried in a pocket, Equipped with HDMI, AUX port. Compatible with multiple devices: Smartphone, laptop, TV Box, tablet, PS3/4, etc. 【Adjustable Brightness & ±40° Keystone】 Through the innovative LED-backlit touchpad to adjust the brightness and keystone correction. You can adjust the brightness mode of the projector in different brightness environment to protect your eyes. The projector is also equipped with ±40° keystone, helping you always get a square image easily. 【Built-in Battery & Power Bank Function】 Built-in 5000mHA rechargeable battery, playing time 1-2HR. Fully charged in less than 4 hours via Type-C port. Supports charging the projector with a power bank. The projector can also act as a power bank to charge other devices.