... LED technology, which is environment-friendly, saving energy,without radiation.10.Self with 2Gmemory, wherever you can display MP3 ... speaker, which can play audio files independently.12.With USB interface,computer interface,DVD Port,AV .VGA port, ... .2W LED power12W noise15dB working temperature0-40 working humidity20-80% storage temperature0 storage humidity20-80% Mini Projector,,mini led projector, ...