mens automatic mechanical watches 42mm full stainless steel swim wristwatches sapphire luminous sky calendar watch, Slivery;brown

winding the internal function of the new mechanical watch is almost zero and it needs to be manually wound before wearing it for the the the first time stainless steel wear stainless steel is resistant to falling but not abrasionresistant so small wear marks are prone to appear error the error of the mechanical watch is within 24 hours and 30 seconds which belongs to the normal error range adjust the calendar please do not actively adjust the calendar between 22 002 00 this may cause damage to the movement.syi