Calibre record · Electric (battery-powered balance)
Hamilton Electric 500
Documented
Launched in January 1957 as the first battery-powered wristwatch: a coil on the balance, switched by fine contact wires, replaced the mainspring. Famous for the asymmetrical Ventura case.
- Manufacturer
- Hamilton Watch Company
- Type
- Electric (battery-powered balance)
- Winding
- Battery
- Production
- 1957–1960s
- Country
- United States
- Diameter
- Undocumented here
- Height
- Undocumented here
- Jewels
- Undocumented here
- Frequency
- Undocumented here
- Power reserve
- Battery
- Oscillator / escapement
- Balance wheel
- Complications
- None
Figures are those commonly published for the standard version; individual versions and grades differ. “Undocumented here” means the value has not yet been confirmed for this record.
