I only used it for a 3-day project that requires a projector, after that it's only lying at my house. RFS - Don't need it anymore. Check these links out to understand more about the projector. https://www.nec.com.au/application/files/5315/7077/9976/nec-datasheet-p525ulg-au.pdf https://sg.nec.com/en_SG/pdf/brochures/projector/Professional_Projectors/P605ULG_P525ULG_P525WLG.pdf https://www.youtube.com/watch?v=Mtib7jIVpic&t=24s