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.
Zenith · Pilot
Pilot Type 20 Ton Up Aged
Ref. 112432679/21C900
Watch details and strap advice
- Case diameter
- 45 mm
- Case height
- 14.25 mm
- Case material
- Stainless Steel
- Case shape
- Round
- Water resistance
- 100 m
- Movement
- Automatic
- Caliber
- Elite
- Dial
- Black
The Zenith Pilot Type 20 Ton Up Aged Steel / Black / Strap takes a 23 mm strap: measure between the lugs and that is the only number you need. A field or pilot watch at heart, it suits canvas, nylon and matte leather more than polished calf. With a 45 mm case and 100 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.
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.