Strange, I've been through all the settings and can't find screen brightness anywhere, it's perfect indoors but as soon as I step out into the sun it's unreadable, but it's no biggie as once I have my settings I rarely change them until the next build.
Perhaps a future firmware upgrade might improve it.
They have the stainless in stock at https://www.ukecigstore.com/wotofo-and-mike-vapes-recurve-rda.html