My third Vetta RT77 finally bit the dust so I thought I'd try a wireless on my road bike. Got the Sigma BC1200 on sale.
Not sure about the rubber bands. The sensor on the fork moves too easily. Any way to fix that?

Question: How do you get the thing to automatically turn on when you start riding? Left for my Saturday ride yesterday and had ridden over two miles when I realized it wasn't recording anything. Had to press the mode button to turn it on.

If there is no auto on feature it's going back.