No. Oppo R17 does not have the 3.5 mm headphone jack. You need to use the USB type C supported earphone. You will get one in-side the box.
No. Oppo R17 Pro does not support wireless charging.
Oppo R17 Pro comes with a SuperVOOC Flash charge technology. It charges the phone in just 10 minutes from 0% to 40%.
Yes, Oppo R17 Pro does have the Corning Gorilla Glass 6 display protection. In fact, it is the world's first phone with Corning Gorilla Glass 6 level of protection.
No. Oppo R17 Pro has an only dual sim slot. You cannot use MicroSD card with the Oppo R17 Pro.
Oppo R17 Pro has a lot of points going in its favour like excellent set of cameras, great display and design as well as top-notch performance. I think Oppo R17 Pro can give solid competition to OnePlus 6T going by the overall performance.