This groupset Shimano Ultegra R8170 Di2 2x12sp includes:

Crankset: Shimano Ultegra FC-R8100

Cassette: Shimano Ultegra CS-R8100, 12sp

Chain: Shimano 12sp

Front Derailleur: Shimano Ultegra Di2 FD-R8150

Rear Derailleur: Shimano Ultegra Di2 RD-R8150

Shift Levers: Shimano Ultegra Di2 ST-R8170

Brakes: Shimano Ultegra BR-R8170

Disk Rotors: RT-CL900 160mm / RT-MT800 140mm

Battery: Shimano Di2 BT-DN300

Charger: USB Type A Charging Cable EW-EC300

Di2 components: 2 x EW-SD300 Di2 electronic wiring cables

bottom bracket not included