The Oukitel WP10 as a rugged phone with a massive 8000mAh battery. It is powered by the Dimensity 800 processor, which also makes it 5G. It launched at a price of US$670, but has a promotional event coming up that will bring that price down to $400 soon.
https://www.notebookcheck.net/The-Oukitel-WP10-is-a-rugged-5G-8000mAh-battery-phone-with-a-December-2020-sale-coming-up.507566.0.html