I've bought the new OSTC Sport model, which arrived yesterday.
However, it seems one of the buttons isn't correctly calibrated.
The computer keeps cycling through all of the menus and from the home screen it automatically goes into the menu.
When I push the button, it seems to stop for a moment, but often continues after a few seconds.
See also the video in link below
With the OSTC Plus the threshold can be changed, with the Sports model, i cannot find this setting.