Expensive watches, especially luxury mechanical watches, typically do not have batteries. Instead, they are powered by mechanical movements that rely on intricate systems of gears, springs, and escapements to keep time accurately. These watches are often referred to as "mechanical watches" or "automatic watches."
On the other hand, some expensive watches, such as high-end quartz watches, do use batteries. Quartz watches are powered by a battery that sends an electrical current through a small piece of quartz crystal to regulate the timekeeping. While these watches are more accurate than mechanical watches, they are generally not as highly valued in the world of luxury timepieces.
Ultimately, whether an expensive watch has a battery or not depends on the type of movement it uses. Mechanical watches are prized for their craftsmanship, tradition, and intricate engineering, while quartz watches are valued for their precision and reliability.
When choosing an expensive watch, it's essential to consider your preferences for movement type, as well as factors such as brand reputation, design, and materials. Both mechanical and quartz watches can be excellent investments, but it ultimately comes down to personal preference and what you value most in a timepiece.