My understanding is that you need the Bluetooth inline junction box to enable Bluetooth connectivity on 11 speed Di2 systems (it comes as standard on 12 speed). I looked into this a while ago and it's hard to find decent documentation to explain what you need, so hopefully someone else on here has done it already and can explain.
My understanding is that you need the Bluetooth inline junction box to enable Bluetooth connectivity on 11 speed Di2 systems (it comes as standard on 12 speed). I looked into this a while ago and it's hard to find decent documentation to explain what you need, so hopefully someone else on here has done it already and can explain.