The MX852UST and MW853UST are compatible with BenQ’s PointWrite technology — allowing up to four participants to simultaneously collaborate on screens as large as 190 inches. Featuring auto calibration, the tool allows teachers and students to interact via enabled pens or finger touch technology on any type of projection surface. Inputs include VGA, HDMI and network ports and they use BenQ’s SmartEco technology, which the company says reduces power consumption by 70 percent via automatic lamp power adjustment based on precise brightness requirements.