
The LX60ST (VGA resolution – 1024×768) and LW61ST (WXGA resolution – 1280×768) projectors claim an average of 20,000 hours of usage before the light source decreases and an 80,000:1 contrast ratio. They feature instant on/off, have VGA and HDMI inputs, and also includes a so-called “SmartEco Advanced” mode that automatically determines the optimal brightness level based on the input source, while a “no source detected” mode automatically lowers brightness to 10 percent when no display has been detected for more than three minutes. With “eco blank” mode, teachers can blank out the LX60ST and LW61ST’s screens when not in use to redirect students’ focus, while also lowering light source power consumption to only 10 percent.
Complete specs are here: http://www.benq.us/product/projector/lx60st