Normally you don’t need to wind up your timepiece, it is powered by the wrist movement while the watch is in use. Your Ballast has self-winding automatic movement at its core. It is an utterly robust and reliable piece of machinery crafted in Japan offering 40 hours of timekeeping accuracy.
In case you haven’t used your watch for some time your Ballast may need some manual winding up. To see the details please refer to the manual here