The Siemens 6AV2107-4DB06-0AK0 is the SIMATIC WinCC Client for Runtime Professional V16, an upgrade from WinCC V7.3 to V7.5 RT/RC 128/RC/RT Client. It is a single license that includes software and a license key for download, but does not come with physical documentation. This version supports five languages: German, English, French, Spanish, and Italian and is compatible with TIA Portal. This product has been phased out.