Yes, it features a rugged magnesium alloy chassis with extensive weather sealing that is four times more effective than the original 7D, protecting against dust and moisture.
The camera uses the Canon EF mount, making it compatible with the entire range of Canon EF and EF-S lenses, as well as third-party EF-mount lenses from Sigma and Tamron.
No, the 7D Mark II does not have built-in Wi-Fi. It does, however, have a built-in GPS for geotagging images.
Using the LP-E6N battery, the camera provides approximately 670 shots per charge based on CIPA standards when using the viewfinder.