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The simple science of quartz watches
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Casio · Pro Trek
Pro Trek
Ref. 340T
Watch details and strap advice
- Case diameter
- 51.7 mm
- Case height
- 15.1 mm
- Case material
- Resin / Plastic
- Case shape
- Round
- Water resistance
- 100 m
- Movement
- Quartz
- Dial
- Grey
The Casio Pro Trek takes a 23 mm strap: measure between the lugs and that is the only number you need. With a 51.7 mm case and 100 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.
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