Fan-Free With the use of heat-resist coating technology, the maximum withstand 50000Lum glare. Avoid dust accumulation without cooling fan. 17 % light efficiency With excellent surface treatment and LC technology, HONY3D-S can provide 17% light efficiency. 0.5 % cross talk ratio By controlling the LC molecules accurately, HONY3D-S provides ghost-free images to the viewer. 2D/3D automatic shift TMS supported, HONY3D-S can detect the state of projector and shift between 2D and 3D mode automatically. No external power supply With the use of ultra low power consumption electronic components, HONY3D-S works without external power supply, it supplies power by 3D interface of the digital projector.