Colorblock Tieback Size:34 • Polyurethane backing plate • Polyurethane backing plate 11T Rear speeds 12 Di2 connectivity wired_Di2 shifting ✔ Di2 connectivity wireless_ANT private (*2)_Adjust mode information ✔ Di2 connectivity wireless_ANT private (*2)_Di2 battery level ✔ Di2 connectivity wireless_ANT private (*2)_Gear position ✔ Di2 connectivity wireless_ANT private (*2)_SHIMANO STEPS data items (*3) ✔ Di2 connectivity wireless_Bluetooth® LE custom (*1)_Adjust mode information ✔ Di2 connectivity wireless_Bluetooth® LE custom (*1)_Compatible with E TUBE PROJECT ✔ Di2 connectivity wireless_Bluetooth® LE custom (*1)_Compatible with E TUBE RIDE ✔ Di2 connectivity wireless_Bluetooth® LE custom (*1)_Di2 battery level ✔ Di2 connectivity wireless_Bluetooth® LE custom (*1)_Gear position ✔ Di2 connectivity wireless_Bluetooth® LE custom (*1)_SHIMANO STEPS data items (*3) ✔ Di2 connectivity wireless_Di2 shifting ✔ LED for system status ✔ SD300 connector (pcs) 0 SD300 port (pcs) 1 SD50 connector (pcs) 0 SD50 port (pcs) 0