All non-automatic watches use a 3-volt lithium-ion battery that should last 2-3 years. The battery types for each style are listed below.
*Changing a battery should be done at a local jeweler and should not be attempted on your own.
- Classic: SONY SR626SW battery
- Barrel 47mm and 42mm: SONY SR626SW battery
- Chronograph: SONY SR927W battery
- Minimalist: SONY SR621SW battery
- Women's: SONY SR621SW battery