As great as quartz movement is, it will not last forever and there may come a time where you need to swap out a certain part that has become defected. Now, here is where things can get a little tricky. In a watch, it may not be too bad to swap out parts from two quartz movement watches. However, with outdoor clocks, they will typically be engineered as a single sealed unit. Due to this, it can become more of a hassle than it is worth to attempt to fix what is broken. If this happens and you know it is not simply malfunctioning because of a depleted battery, you may to simply keep it for aesthetics or throw it out.