SpecStudio
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Tudor Grantour Chrono Fly-Back
Ref. 20550N · Chronograph
$6,050Stock unknown
Case
- Diameter
- 42mm
- Material
- Stainless Steel
- Finish
- Brushed and Polished
- Water resistance
- 150m
- Caseback
- Solid
Crystal & dial
- Crystal
- Sapphire
- Shape
- Flat
- Dial colour
- Black
- Indices
- Applied
Movement
- Type
- Automatic
- Beat rate
- 28,800 vph
- Power reserve
- 42h
The market
Market prices.
Retail$6,050
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Retail stock & market context
Tudor on the secondhand market
+11.6%
2026 so far · +3.5% to +16.2% · 40 matched watches
+3.6% vs the index
Chronographs as a group: +5.8% · 139 matched watches
Year-by-year readings →The connection engine
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In a nutshell
The Tudor Grantour Chrono Fly-Back (ref. 20550N) is an automatic chronograph watch, with a 42mm stainless steel case, with a 42-hour power reserve. Water resistance is rated to 150m, under a sapphire crystal. Manufacturer MSRP is $6,050.
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