Affordable Watch Straps for Sinn
Sinn builds purposeful German tool watches — the everyday 556, the pilot-style 104, the submarine-steel U1, the anti-magnetic 856, and the mission-timer EZM series. Official Sinn straps and bracelets run $100–$300, and premium aftermarket makers like Delugs charge $70–$130. Other sites carry leather, silicone, and mesh alternatives for $6–$28. The good news is that Sinn keeps things consistent: the 556, 104, and 856 all use a 20mm lug width with drilled lugs, while larger divers like the U1 step up to 22mm. Drilled lugs make strap changes fast and low-risk across most of the lineup.
Price context
Official Sinn straps: $100–$300. Premium aftermarket: $70–$130. Other sites: $6–$28.
Lug widths
- 20mm (556, 104, 856)
- 22mm (U1, larger divers)
- 20mm (EZM standard)
- 22mm (EZM diver variants)
Popular Sinn models
Best strap styles for Sinn
Buying tips
- 01The 556, 104, and 856 all use 20mm with drilled lugs, so a single 20mm strap collection works across the trio and changes are quick.
- 02Drilled lugs let you push spring bars out from the side with a pin tool, minimizing the risk of scratching the bead-blasted cases.
- 03The U1 and larger Sinn divers use 22mm, so don't assume your diver shares the 20mm of the 556.
- 04Sinn's bead-blasted finishes pair naturally with a matte silicone or a sailcloth strap rather than a glossy dress leather.
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Try the tool →Frequently asked questions
What lug width does the Sinn 556 use?
The Sinn 556 uses a 20mm lug width with drilled lugs across all its variants. Twenty millimeters is the most common size, so other sites carry a huge range of leather, silicone, NATO, and mesh straps for $6–$28. The drilled lugs are a real advantage: you insert a pin tool through the side hole to push out the spring bar, keeping the tool away from the 556's bead-blasted case and reducing scratch risk. Because the 556 is a clean, versatile everyday watch, it takes almost any strap style well — from a dressy leather to a casual NATO.
Do the Sinn 556, 104, and 856 all use the same strap?
Yes — the 556, the 104 pilot, and the anti-magnetic 856 all share a 20mm lug width, so a single 20mm strap fits all three. That makes them ideal for owners who like to rotate straps across a small collection. All three also have drilled lugs, so changes are fast and low-risk. Other sites stock 20mm options in every material for $6–$28. Be aware that larger Sinn models, particularly the U1 and other big divers, step up to 22mm, so confirm the specific model before assuming your strap will carry over.
What lug width does the Sinn U1 use?
The Sinn U1, built from German submarine steel, uses a 22mm lug width to match its larger 44mm case. Twenty-two millimeters is a very common size, so you'll find plenty of robust dive-appropriate straps on other sites — silicone, FKM rubber, NATO, and sailcloth — for $6–$25. Because the U1 is a serious dive watch, a thick silicone or rubber strap or a heavy-duty NATO suits it better than a thin dress leather. Don't assume the U1 shares the 20mm of the smaller 556 or 104; the divers run wider. Measure between your lugs to confirm.
Are Sinn watches easy to change straps on?
Generally, yes. Most popular Sinn models — including the 556, 104, and 856 — feature drilled lug holes, which let you push the spring bars out from the side using an inexpensive pin tool. This is faster and safer than working between tight lugs, and it keeps the tool away from Sinn's bead-blasted and Tegimented case finishes, which you'll want to protect. For models without drilled lugs, a quality fine-fork spring bar tool does the job. A tool and a set of spring bars together cost only a few dollars on other sites, and straps run $6–$28.