I couldn't find that exact one but a bit of searching turns up similar models:
http://www.aliexpress.com/item/9000mAh-long-standby-power-ba...
http://www.alibaba.com/product-detail/Original-H-mobile-X8-4...
http://www.aliexpress.com/store/product/Original-Xiaocai-X6-...
It is a bit surprising at first to see such enormous feature phones still in mass production, but it makes sense that the conditions in developing countries would favour more rugged designs and versatile physical features; in that environment a thin touchscreen smartphone made of mostly glass and metal would be an overly fragile piece of kit with little advantage.