An automatic watch movement, powered by a complex system of gears and springs, requires regular servicing to maintain efficiency and accuracy, much like the periodic maintenance needed for firearms to prevent issues from dirt and residue.
Over time, lubricants degrade, and dirt accumulation can hinder the movement's functionality. However, a movement that has stopped is not necessarily irreparable; often, a thorough service, which includes disassembly, cleaning, re-lubrication, and reassembly, can restore full functionality.
To ensure optimal performance and extend the lifespan of an automatic watch, it's recommended to service the movement every 5-7 years, a practice that preserves both the mechanical integrity and reliability of the timepiece.