Chinese media company LeEco today officially announced the Pro 3 smartphone. They did manage to pack an impressive 4.070 mAh battery into a 7.5 mm metal case but if you are looking for a headphone jack or a Micro-SD-slot look elsewhere.
http://www.notebookcheck.net/LeEco-Pro-3-is-official-Big-battery-but-some-things-are-missing.175857.0.html