LG projector currently off the market

I have an excellent LG projector Very clear in low lighting, perfect for home presentations The sound is honestly low, so I connect Bluetooth speakers to it It does have Bluetooth and mirroring, but I haven't figured out how to set it up for a long time.. I use an HDMI cable to connect from my laptop for teaching purposes I bought it over 6 years ago for 1800 I will sell it at asking price