When comparing watch mechanism types, quartz movements are more accurate than mechanical movements and require relatively little maintenance besides periodic battery replacements. The average lifetime of a battery ranges from 12 to 36 months. Quartz watches tend to have lower prices due to their less intricate internal mechanisms. Quartz movements in luxury Swiss watch brands, such as TAG Heuer or Breitling, are designed with strict quality control standards and are highly reliable. Although they are more accurate and less costly, battery-operated watches tend to be less desirable to most watch enthusiasts because they lack the internal craftsmanship and engineering of a mechanical movement.