I'm glad to see so much interest in devices like this. I hope they succeed. I own an Onyx Boox Tab Ultra, which I've been enjoying tremendously, and specs seem to compare favorably to this.

https://shop.boox.com/products/tab

Doesn't seem to be for sale at the moment, but the version with a color epaper layer is: https://www.amazon.com/BOOX-Tab-Ultra-Pro-Digital/dp/B0CHM54...

Do you have more details on your display technology and how it performs? Any demo videos? It sounds like this is the key selling point?

I'd also be curious to see more on the software side of this product - stock android isn't perfect for an eiknk display.