The Siemens part number 6AV6613-1GA51-3CA0 refers to WinCC flexible 2008 Runtime with support for 4096 PowerTags. This is a single runtime license that includes:
Software and documentation on CD
License key on a USB flash drive
Compatible with Windows 7 (32/64-bit) and Windows 10 (64-bit)
It’s designed for operator control and monitoring applications and includes features like alarm and report systems, recipe/user archive management, and OPC-DA interfaces (both client and server).