Sinn 556 I
Frankfurt-based Sinn builds watches for pilots, divers and German police, and the 556 is its everyday distillation of that engineering. It’s a clean, high-contrast dial in a 38.5 mm case that wears perfectly. It is built to tool-watch standards: 200 m, sapphire front and back, and serious shock resistance. It’s understated, nearly indestructible and loved by people who know watches.
Who it’s for
Buyers who want quality and function over a famous logo. It’s a great choice for a reliable one-watch collection.
Buying tips
- Variants include the 556 A (Arabic numerals), the 556 I RS (red second hand) and limited editions. Make sure you know which one you’re buying.
- Sinn is sold mainly direct and through a few dealers, so used prices on eBay and Chrono24 are the best guide.
- The H-link bracelet is excellent. Examples that include it are worth more.
| Brand | Sinn |
|---|---|
| Reference | 556.010 (556 I) |
| Case size | 38.5 mm |
| Case material | Stainless steel |
| Movement | Automatic, Sellita SW 200-1 (earlier: ETA 2824-2) |
| Power reserve | About 38 – 41 hours |
| Water resistance | 200 m |
| Crystal | Sapphire (front and back) |
| Production | Current |
| Typical market price | around $1,900 (estimate; see tracked prices) |
Sinn 556 I price history
How we measure: eBay figures are the median of matching US listings after removing accessories, parts and statistical outliers. "Asking" means listed prices; "sold" means completed sales. Retailer prices are spot checks. Prices change constantly; confirm on the retailer's site.
