Yes, Nokia 2 is a perfect combination of Alluminimum Alloy frame and solid industrial grade Polycarbonate back.
Yes, Nokia 2 does have the dedicated MicroSD card slot.
Yes, Nokia 2 comes with Corning Gorilla Glass 3. It is scratch resistant.
Yes, Nokia 2 does have the 3.5 mm music jack.
It's not a bad phone, this Nokia 2. It's just that there's only so much you can do within a budget this tight.