1.[HD RESOLUTIONS] With minimal resolution of 320240 and max compatible resolution of 19201080, the Projector provides sharp and detailed HD images. Ensuring the video experience. 2.[WIRED USB CONNECTION]You can choose a USB data cable connection. It provides Sync Smartphone Screen technology for IOS and Android systems. You can use it to transfer videos/photos/games from your smartphone to a sync screen for projection display via USB data cable. (Note: For Android system wired screen connection, you need to connect the speaker to play the sound outside.) 3.[SURROUND SPEAKER] Build-in stereo surround speaker, the hd projector restores every detail sound effect to let you enjoy the pleasure sounds in different scenes. 4.[COMPATIBLE DEVICES]This projector is very versatile and has a socket, USB port, Audio interface, AV hole, which allows you to use it with Smartphone, set-top box, USB flash drives, DVD, stereo, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store