The Doogee S200 has a quad-core processor, long-lasting battery life, and even a 100-megapixel camera. It's discounted for the holidays.
Source: ADnet
Source Link: https://www.zdnet.com/article/this-rugged-android-phone-has-a-secondary-display-and-20-day-battery-life-that-made-my-iphone-feel-boring/