USED
SIEMENS Simatic 
6AV6641-0CA01-0AX1 
Operator Panel OP77B
TESTED and Os-updated. It is ready to use.

SIMATIC HMI, KTP700 Basic, Basic Panel, Key/touch operation, 7" TFT display, 65536 colors, PROFINET interface, configurable from WinCC Basic V13/ STEP 7 Basic V13, contains open-source software, which is provided free of charge see enclosed CD