Yes 

this mic has a standard 3.5 mm jack. 

Yes. It has a 12v external jack. I found that if you run the camera with just a solar battery pack, you have to unplug it every time you open it to check the memory card. When you do that, the date and time reset. Leaving batteries in the camera solves this problem. 

For Canon DSLR+Marco Ring+E-TTL+GN14 can work with canon 6d mark ii 

FD-EOS fit for Canon FD mount lens and canon EF mount camera body. canon 60d is EF mount, so the adapter ring can work with your camera, but you need to check your lens mount. could you pls let us know your lens specific model? service(AT)kentfaith(DO NOT)com, Please note: It is not same between Canon FD mount and EF mount, this adapter ring is only for Canon FD mount lens, please contact us if you want to purchase for Canon EF mount lens.