That video is a demo from almost a decade ago, the current generation ones are better, but I couldn’t find a good demo outside of hobbyists rambling.
This is without a doubt the biggest waste of potential I’ve seen in the screen market and the fact no one uses memory lcd type displays for portable displays is a crime which probably involves patents. It has full color, fast refresh rates, low power draws that extend battery lives to months between charges and are just fantastic for things the picture just needs to be decent on.
you can still buy them new on ebay and stuff, that's how i got mine. to use one check out rebble.io
or pick up a pinetime, those are still in early development firmware-wise but the most popular firmware option (infinitime) has notification support iirc
I bought a couple Pebble Rounds at first, but they kept breaking in the same way (glass front popping loose) after about a year each time, so I figured I would cut my losses and try to wean myself off permanently. It's the only Pebble model I was really in love with due to the low profile and feminine aesthetic. The PineTime looks really interesting though - thanks for sharing, I think I'll keep an eye on it going forward.