You get a lot of content across in a presentation. More than will ever be remembered by your audience.
That said, here’s a simple technique to ensure that they receive more of your message:
The transition of an idea from your brain to your mouth is faster than your audience’s consumption of that idea from their ear to their brain because they have to digest it on the way in. So make your point, explain your feature, describe the value, finish your sentence… and pause.
Count “three.. two… one…”* to yourself and then on to the next one.
It’s the tempo of your communication that draws them in. A steady, clear beat provides open space for them to comprehend or ask for clarification, and then you can move on.