Sinn and Damasko represent the pinnacle of German tool watch engineering. Both prioritize function over flash, both develop proprietary technologies, and both are used by professionals who need watches that actually work. The choice comes down to philosophy and specific technical priorities.
Quick Overview
Sinn
- Founded: 1961 (Frankfurt)
- Focus: Pilot/dive watches
- Tech: Tegiment, Ar-dehumidifying
- Range: $1,200 - $5,000+
- Icons: 556, 856, U1, EZM series
Damasko
- Founded: 1994 (Barbing)
- Focus: Hardened cases/movements
- Tech: Ice-hardened steel, in-house
- Range: $1,500 - $4,000+
- Icons: DA36, DC66, DS30
Proprietary Technologies
Sinn Technologies
- Tegiment: Surface hardening to 1,200 Vickers (vs ~200 standard steel)
- Ar-dehumidifying: Copper sulfate capsule prevents fogging
- Temperature resistance: Special oils for -45°C to +80°C operation
- Magnetic field protection: Soft iron inner cages
- Hydro: Oil-filled cases for extreme depth (U1000, U2)
Damasko Technologies
- Ice-hardened steel: Through-hardened to 60+ Rockwell (not just surface)
- Damest coating: Black PVD alternative, extremely durable
- In-house movements: Own calibers (A35, C51) with proprietary escapement
- Nickel-free: Entire watch hypoallergenic
- Bezel system: Proprietary bidirectional with 120 clicks
💡 The Key Difference
Sinn hardens the surface (Tegiment). Damasko hardens throughout (ice-hardening). Sinn's approach is effective and proven. Damasko's goes further—even deep scratches reveal hard steel beneath. For extreme use, Damasko's through-hardening wins.
Movement Comparison
Sinn: Uses modified Sellita/ETA movements with their own regulations. Focus is on case technology rather than movement development. Movements are reliable, well-finished for tool watches.
Damasko: Developed in-house movements (A35 series) with proprietary escapement and balance. This is rare at their price point. Movement finishing is functional, not decorative.
Winner: Damasko for in-house development; Sinn for proven reliability.
Popular Models Compared
- Entry pilot: Sinn 556 ($1,550) vs Damasko DA36 ($1,590) — Nearly identical pricing, both excellent
- Chronograph: Sinn 356 ($2,490) vs Damasko DC66 ($2,890) — Sinn better value, Damasko harder case
- Diver: Sinn U1 ($2,190) vs Damasko DSub1 ($2,400) — Both exceptional, different aesthetics
Who Should Buy Sinn?
- Those wanting proven, time-tested designs
- Pilot watch enthusiasts (EZM series has actual cockpit heritage)
- Buyers wanting extreme temperature/humidity resistance
- Those who prefer modified Swiss movements
- Value-conscious buyers (slightly lower prices)
Who Should Buy Damasko?
- Those prioritizing ultimate scratch resistance
- Movement enthusiasts wanting in-house at this price
- Nickel allergy sufferers (fully hypoallergenic)
- Buyers wanting through-hardened, not surface-hardened
- Those who appreciate vertical integration
Final Verdict
Buy Sinn for proven German tool watch excellence with extensive technology portfolio and strong heritage. The 556 and 856 are perfect daily wearers.
Buy Damasko for ultimate case hardening, in-house movements, and the most scratch-resistant steel watches available. The DA36 is a technical marvel.
Both are exceptional. You can't go wrong—only different.
Read Sinn History