Sony MP-CD1 weight is just about 280 grams.
Yes, Sony MP-CD1 does have the HDMI slot and you will get an HDMI cable also inside the box.
It takes about 150 minutes to fully charge the huge battery of 5000mAh of Sony MP-CD1.
Yes, Sony MP-CD1 does have a manual focus slider.
No. Sadly Sony MP-CD1 does not have the Bluetooth™ connectivity.
If you do give impromptu presentations and don't want to depend on the quality of tech you find in offices and hotels, the MP-CD1 (preferably outfitted with a small portable speaker and a wireless dongle) will do the job. If you aren't a traveling business person and you're looking for a projector with a bit more brightness, you're best served looking at full-on home theater projectors.