Shimano 105 Di2 ST-R7170 12 Speed Shifters + Flat Mount Caliper Bikecorp you can choose two options

you can choose two options for the release angle : 13° or 17°

Restores original grip

Inner plate: Chrome Plated + PVD Gold or Black

Gyroscope: Yes

Shimano 105 Di2 ST-R7170 12 Speed Shifters + Flat Mount Caliper Bikecorp you can choose two optionsWorry free Di2 shifting in a compact shifter size The new SHIMANO 105 shift brake lever features Di2 electronic shifting for the first time, bringing precise, intuitive gear changes to even more riders. Reach adjustment and customized button functions allow you to dial in your ideal ergonomics. Features Clean cockpit: Wireless connection enhances the aesthetic of your bike while keeping shifting lightning fast Longer lasting. Uses two CR1632 batteries