Additionally, the Eterna 1504 watch movement may include other functions or features not listed in the given set. Such functions may include, but are not limited to, the following: - Hours and minutes display - Quickset date - Hacking seconds - Water resistance - Shock resistance - Automatic or manual winding - Power reserve indicator - Jewels for reduced friction and improved durability - Beat rate (vibrations per hour) - Accuracy rate - Power source (such as manual winding or automatic winding with a rotor) - Size and dimensions - Complications (such as moon phase display or chronograph) However, as the given set specifically requests the discussion of only the sweep seconds and calendar functions, this summary focuses solely on those two functions.