Mechanics 3 min read
The simple science of quartz watches
Learn how a battery, a tiny crystal and a simple circuit work together to keep your quartz watch running with highly reliable accuracy every day.
Swatch · BIG BOLD
Ref. SB05V103
The Swatch Big Bold Biosourced Purple Joy takes a 25 mm strap: measure between the lugs and that is the only number you need. With a 47 mm case and 30 m of water resistance, a thicker strap balances the case. Quartz movement. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.