This is … ummmmm …
It looks like the Onan X series under the Ozo brand name.
There’s no Penny logo on the deck, so this board is a clone:
Wait. Is he really going to do that:
He is:
Look at the size of the battery (the same as the Mellow, which it rips-off):
And it’s let loose on the world:
I think that was more of a one-time demonstration and not something being ridden daily.
The plastic deck flexes. And the Ozo — Onan — battery can fall out of its compartment if it’s not properly seated. Hell, vibration can eventually make it drop even when seated properly. So I have my doubts about this being something practical. Still, the small size of it is something to behold!
Someday we’ll have powerful batteries the size of a current cellphone battery that won’t need recharging for an entire month and can give an eSkateboard practically limitless range. I’d like to live to see that day.
On that day, a plastic electric Penny board would be practical.
Previously here:
Invasion Of The Micro Electric Skateboards!
eSkateboards category
Mike Cane's Atomic Supermen 
How long is it the deck?
Why didn’t you replace the front wheels by higher ones?
I did not do the video. It’s a standard Penny-sized deck: 22″. Further questions, ask at YouTube. Here are other small decks: https://atomicsupermen.wordpress.com/2018/09/24/reference-sizing-up-some-small-skateboard-decks-third-edition/