Description: Short Focus Optical Lens - Focus at a distance of 50CM. Add image edge distortion correction, significantly improve the image uniformity. New Ul Interface - Support for multi-format video, audio, pictures, e-book playback. Brightness Increase - Brightness increased by 50%, better sensory experience, new optimized light path + efficient LED Diffuse Reflection Imaging Makes the Eye Healthy - Projection unique diffuse reflection imaging principle, reduce eye stimulation and visual fatigue, so that more comfortable and healthy watching Built-in Miniature Speaker - Ultrasonic welding technology, small size also has loud effect. Specification: Model: T300 Support Resolution: 1920x1080 Interface: HDMI, USB, TF Card Slot, AV, 5V-2A Built in Speaker: Yes Lamp Life: 20000 hours Product Size: 114X87X50mm Package Includes: 1X T300 Projector 1X Power Adapter (AU Plug) 1X Remote Control 1X AV Cable 1X User Manual Note: Transition: 1cm=10mm=0.39inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!