The Acer S5201M promotes meetings that are more interactive and enhances the learning experience. This is thanks to the Acer SmartPen that comes with the projector and which allows audience members to draw or write on the projected image from up to 32' away. Maximum Resolution: UXGA (1600 x 1200) Maximum Wide Resolution: 1080p (1920 x 1080) Contrast Ratio: 4500:1 Brightness - ANSI Lumens: 3000 standard mode, 2400 economy mode Projection Lens: F = 2.6, f = 7.50mm, manual focus Projection Screen Size: 40" (102cm) 300" (762cm) Projection Distance: 1.6' (0.5m) 12.2' (3.7m) Throw Ratio: 77" @ 95cm (0.61:1) I/O Connectors: USB Type Mini-B, RS232 mini-DIN, composite video RCA jack, S-video mini-DIN, PC audio stereo mini-jack, microphone in stereo mini-jack, RJ-45 LAN, 12V DC (screen control), analog RGB D-sub, two USB Type A, two HDMI (video, audio, HDCP), two analog/RGB component video (D-sub), two PC audio stereo mini-jack Data Compatibility: 1080p (1920 x 1080), WSXGA+ (1680 x 1050), WXGA+ (1440 x 900), WXGA (1280 x 800, 1280 x 768), UXGA (1600 x 1200), SXGA+ (1400 x 1050), SXGA (1280 x 1024), XGA (1024 x 768), SVGA (800 x 600), VGA (640 x 480); PC, iMac, MacBook; VESA standard Video Compatibility: NTSC (3.58/4.43), PAL (B/D/G/H/I/M/N), SECAM (B/D/G/K/K1/L), HDTV (720p, 1080i, 1080p), EDTV (480p, 576p), SDTV (480i, 576i) Displayable Colors: 1.07 billion DLP 3D Ready: 3D content, 3D glasses and appropriately equipped PC also required to display 3D images Integrated Speakers: 2 x 5.0W Lamp Type: Osram 230W user-replaceable P-VIP Expected Lamp Life: 2,500 hours standard mode, 4,000 hours economy mode