If you purchased a mechanical watch and want them to retain their functionality for a long time, rather than stop at the most inopportune moment, then in this case you need to monitor their plant from time to time.
Uma uthenge iwashi eliwayindwayo futhi ufuna isikhathi eside ukugcina ukusebenza kwabo, kunokuba ngokuhlala okwamanje esibi ke esimweni esinjalo kubalulekile ngezikhathi ukuqapha isitshalo yabo.