This machine is cl312a The following is the detailed parameters¡êo Projection method : Front, rear, ceiling mount, table top Image zoom :Electro ¡¨ ual keystone correction Throw ratio :50''@1.72m 72''@2.46m 100'' @3.38m Image size (diagonal) :17"-180" (suggest 40"-100" best) Aspect ratio : 4:3 native, 16:9 compatible;switch freely Osd language :Total 23 languages (english, german, french, spanish, portuguese, russian, italian, finnish , swedish , hungarian, dutch, norwegian, danish, greek, croatian , polish, czech, romanian, slovene, serbian, janpanese, simplified chinese, traditional chinese) can add any language as customer require Noise level (std/bright) :