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.
IWC Schaffhausen · Portofino
Portofino 34
Ref. IW357412
Watch details and strap advice
- Case diameter
- 34 mm
- Case height
- 8.6 mm
- Case material
- Stainless Steel
- Case shape
- Round
- Water resistance
- 30 m
- Movement
- Automatic
- Caliber
- 35100
- Dial
- Green
The IWC Schaffhausen Portofino 34 Stainless Steel / Green takes a 16 mm strap: measure between the lugs and that is the only number you need. We list 9 straps in that width. A dress watch by proportion: a slim leather strap, plain or lightly stitched, keeps the line clean. With a 34 mm case and 30 m of water resistance, a strap of medium thickness keeps the balance. Automatic movement. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
Straps by lug width (16 mm) 9
All 9 16 mm strapsWidth is a starting point. Check the case and end fittings before choosing.
-
Slim Colour LeatherLeather€24.90 -
Ladder Link SteelSteel€39.90 -
Denim StitchNylon€22.90 -
Eyelet CanvasNylon€22.90 -
Smooth SiliconeSilicone€19.90 -
Explorer LoopNylon€24.90 -
Braided PerlonNylon€19.90 -
Lizard TextureLeather€24.90 -
Epsom GrainLeather€27.90
Read before you choose
All stories
Tutorial 6 min read
Omega Speedmaster watch strap guide
One black dial, four different directions. Explore suede, nylon, rubber and woven straps, starting with the 20 mm lugs of a specific Moonwatch reference.
Tutorial 3 min read
Choosing a NATO strap or a two-piece strap
Learn how NATO and two-piece straps attach to your watch, affect wrist height, and provide security so you can choose the right style.