Mechanics 8 min read
How an automatic watch works
Your wrist gives it energy. A spring saves it. A tiny balance sets the rhythm. Follow the journey inside an automatic watch, one pencil drawing at a time.
Certina · Heritage Collection
DS Chronograph Automatic 1968
Ref. C0404623604100
Watch details and strap advice
- Case diameter
- 42.5 mm
- Case height
- 14.75 mm
- Case material
- Stainless Steel
- Case shape
- Cushion
- Water resistance
- 200 m
- Movement
- Automatic
- Caliber
- A05.H31
- Dial
- Black
The Certina DS Chronograph Automatic 1968 PVD / Black takes a 21 mm strap: measure between the lugs and that is the only number you need. We list 6 straps in that width. Built for water, it wears naturally on rubber or a nylon NATO; a leather strap keeps it for dry days. With a 42.5 mm case and 200 m of water resistance, a thicker strap balances the case. Automatic movement. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
Straps by lug width (21 mm) 6
All 6 21 mm strapsWidth is a starting point. Check the case and end fittings before choosing.
-
Deployant RubberRubber€49.90 -
Sailcloth WeaveNylon€27.90 -
Suede RallyLeather€34.90 -
Classic EmbossedLeather€24.90 -
Epsom GrainLeather€27.90 -
Heritage SuedeLeather€29.90
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