Sinn 556 A 38.5mm German Automatic Pilot Watch Full Set Two Straps
Sinn 556 A 38.5mm German Automatic Pilot Watch Full Set Two Straps
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Returns & Refunds
Returns & Refunds
30 days from delivery, full refund. The watch needs to come back unworn and in the condition you received it — original packaging, papers, tags and stickers, no strap swaps or sizing changes.
- Message us within 30 days on WhatsApp +44 7859 890747 or at luca@calderonewatchco.com
- We send you a returns number and a prepaid label for UK returns. International returns are at your own cost.
- Refund issued within 3 working days of the watch arriving back with us
Authenticity Guarantee
Authenticity Guarantee
Every watch is checked before it's listed. Original parts, the correct movement for the model, case and dial condition, movement health — then photographed in detail so you can see exactly what you're buying.
- We look for aftermarket parts, refinished cases, marriage watches and frankenwatches
- Anything that isn't right is disclosed in the listing, or the watch doesn't get listed
- 300+ watches sold with no authenticity dispute to date — backed by our public review history
Shipping & Delivery
Shipping & Delivery
Free insured, tracked delivery. Every watch we list is physically here in the UK — if you can add it to the cart, it ships the same working day.
- International orders may be subject to local customs or duties on arrival
- We'll hold any watch for 24 hours — WhatsApp +44 7859 890747
What's Included:
- Sinn 556 A watch
- Original Sinn presentation box
- Outer box
- Model Series 556 booklet
- Sinn papers/warranty envelope
- Olive green NATO strap with Sinn hardware
- Brown leather strap with Sinn-signed buckle
Why Buy From Us:
- Full kit with both original straps
- 300+ five-star eBay reviews
- 100% authenticity guaranteed
Key Details:
Brand & Model:
- Brand: Sinn
- Model: 556 A
- Reference: 556.13991
- Condition: Pre-owned, excellent
Size & Measurements:
- Case: 38.5mm
- Lug-to-lug: 45mm
- Thickness: 11mm
- Lug Width: 20mm
- Case Material: Satinised stainless steel
Movement:
- Calibre: Sellita SW200-1 (Sinn SZ01)
- Type: Swiss automatic
- Features: Date, hacking seconds, hand-winding
- Power Reserve: 38 hours
Features:
- Water Resistance: 200m (20 bar)
- Crystal: Sapphire with AR coating
- Crown: Screw-down with "S" logo
- Caseback: Exhibition with sapphire crystal
- Antimagnetic
- Shock resistant
Straps:
- Olive NATO with Sinn hardware
- Brown leather with Sinn-signed pin buckle
Condition Notes:
- Crystal: Perfect
- Case: Excellent, light wear consistent with careful use
- Caseback: Clean
- Leather strap: Developed natural patina
- NATO strap: Good condition
About This Watch:
The Sinn 556 A is the go-to entry point into German tool watches. At 38.5mm it wears smaller than the spec suggests thanks to the short lugs and sits flat on the wrist. The "A" denotes Arabic numerals versus the "I" version with indices. Built in Frankfurt with proper tool watch specs: 200m water resistance, antimagnetic protection, and shock resistance. The Sellita SW200 is a proven workhorse — same architecture as the ETA 2824 with easy serviceability. This example comes as a full kit with both the NATO and leather straps.
Shipping:
- Ships same business day via insured shipping
- UK-based seller with tracking provided
Questions? Message us anytime!
