BenQ provides extended possibilties for classroom collaboration! Seamlessly integrate with BenQ projectors for a truly collaborative learning environment on the extended screen. Teachers and students can enjoy smoothly writing with ultra-fast 16ms* response time and calibration accuracy max. +/-2 pixel, via QWrite software on any surface (*speed varies by laptops). Use intuitive Windows gestures* such as zooming in and out or scrolling while browsing web pages, pictures, or Google Maps (*finger mode requires pairing with optional PointWrite Touch Module). PointWrite Pen Gen2 provides auto power off function.