Shimano 12 Speed 105 DI2 Unboxing Specs, Initial Review 

Subscribe for free:
/ @pedalpowercycling
Timestamps:
0:00 Purchasing
1:14 Unboxing
2:28 Shifters and Brakes
11:12 Front Derailleur
12:57 Rear Derailleur
15:24 Crankset
17:12 Bottom Bracket
17:52 Cassette
19:51 Chain
20:58 Electronics
23:35 Weight