Steinhart NAV.B-CHRONO NAV.B-CHRONO 42 CLASSIC A-TYPE
The Steinhart NAV.B-CHRONO NAV.B-CHRONO 42 CLASSIC A-TYPE takes a 20 mm watch band.

Steinhart · NAV.B-CHRONO
- Lug width
- 20 mm
- Case diameter
- 42 mm
- Reference
- NAV.B-CHRONO 42 CLASSIC A-TYPE
- Family
- NAV.B-CHRONO
- Water resistance
- 50
- Model
- NAV.B-CHRONO 42 CLASSIC A-TYPE
Bands that fit
Cut and stitched in Milano, in the width this watch takes.
Will a strap close on your wrist?
Set for this watch: 42 mm of case and 20 mm between the lugs. Add your wrist and see where a standard strap would close.
mm
Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.
Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.
Sizing notes
- 20 mm is the gap between the lugs, so a 20 mm band goes in without adapters. Whether it sits flush against a 42 mm case depends on how that case is shaped.
- 20 mm is one of the common sizes: 15,081 of the 41,485 watches measured take it, which is why it is the width most bands are cut in. Every watch that takes 20 mm →
Same lug width, other Steinhart lines
- Marine 38M0506
20 mm - Ocean 39 Adventure classic Diver's watch with replaceable batteriesOcean 39 Adventure classic Diver's watch with replaceable batteries
20 mm - Ocean 39 PINK-GOLD CeramicOcean 39 PINK-GOLD Ceramic
20 mm - Ocean 39 vintage GMT greenOcean 39 vintage GMT green
20 mm - Ocean One Titanium 500 GMT premium CeramicOcean One Titanium 500 GMT premium Ceramic
20 mm
Single Pass Strap Pink — Hammered Calf
Hammered Calfskin Taupe Strap Ecru Stitching
Dark Brown Saffiano Strap with Ecru Stitching
Dark Brown Calfskin Military Strap
Black Saffiano Rubber Strap