Selle Royal Lookin Stracciatella Saddle - Steel Black Athletic Front or Rear Customizable Screen Yes External Sensor

Customizable Screen Yes External Sensor Compatibility Speed/Cadence/HR Heart Rate Monitor Yes Primary Color White Solar Charging No Watch Color Whitestone Battery Type Lithium Ion Connectivity ANT+ BT SMART GPS Yes Touchscreen Yes Wristband Whitestone/Neo Tropic - Silicone

Chainline: 55mm Rings Sold Separately Number of Chainrings No Rings Included Drivetrain Speeds 12 Chainring BCD Direct Mount Chainline/Hub Compatibility 141/148 Boost Hubs Color Gray Crank Length (mm) 170 Crank Intended Use Mountain BB Included No Pedal Spindle 9/16" Spindle Interface Type Shimano Hollowtech II Defined Color Gray Size 170Mm

DoubleTap 2x shift/brake lever offers high performance and the light weight of carbon and aluminum construction

and here are instructions on how to measure your BCD

Selle Royal Lookin Stracciatella Saddle - Steel Black Athletic Front or Rear Customizable Screen Yes External SensorLookin puts comfort and sustainability on display with a unique design featuring windows on the saddles surface revealing the supportive Royalgel padding paired with innovative Stracciatella foam inside. Stracciatella is a sustainable technology that seamlessly incorporates discarded saddles broken down into granulates to create new foam material. Lookin also features lateral inserts to protect the saddle from wear or accidental abrasions and shock