i have had the Gearbox Auto since last November. Although I do not wear it daily I noticed today that the weight on the back doesn't appear to swing smoothly. Perhaps it's just my perception as I've never really paid much attention to the underside. That is to say if you rotate the watch the weight seems to fall one way or the other and like a pendulum with a spring attached to it, it seems to stop and pivot back and forth ever so slightly as if a magnet were attracting it to one specific spot. The gear spins freely in 360 degrees of rotation and there is only a slight noise when it rotates. I've done my best to describe what's happening but I'd like to hear from those who own the watch to see if what I'm experiencing is common. As a comparison the wheel does not rotate like that of a FMJ. I also own a Timebomb and I would say it doesn't mirror that either. The watch does hold accurate time.