NC 700 - No way to switch devices using the headphones
On the QC35 headphones, you could slide the power button to choose the active device. There needs to be a way to do this from the NC-700 headphones, but it looks like a glaring omission.
I use this in the scenario where I have more than two devices which I have paired, and I need to have the headphones switch to have an active connection with a device that isn't active. While you can do this using the Music app, or by initiating the connection from the device, this isn't sufficient. The phone can be tucked away. Most devices do not have an optimized way to reconnect.