How do I determine which version of the ESS business package is installed?

All,

I am working on a project to implement more of the services of ESS in our EP7 portal. We are still using the iViews that we were using with our 4.7 system. We have since upgraded to ECC 6.0 on the backend. I know we have installed a newer ESS business package but I am unsure of the version.

1) How do I determine which versions of the ESS business package is currently installed in my Portal?

2) Should I be using the SAP_ESS 600 version or the BP_ERP5ESS 1.0 version?

Thank you,

Brian Snyder