This Sinn 556i is a 2021 model with full kit, including box, papers, spring bar tool, all bracelet links, and the bracelet tool. It features an AR coating on the crystal in perfect condition.

• Condition: Good condition, minor scratches and desk marks
• Bracelet material: H-link
• Bracelet size: not specified
• Case condition: some desk marks and minor scratches

A German-made watch with a sleek black dial and red seconds hand, perfect for outdoor adventures and daily wear.

• Case Diameter: 38.5mm
• Thickness: 11mm
• Lug Width: 20mm

Two watches are up for sale: an Omega Seamaster Diver 300m with a blue wave dial and a Sinn 556i RS with an inky black dial.

• Condition: great running condition, minor scuffs on case and bracelet
• Case size (seamaster): 41mm
• Case size (sinn): 39mm
• Dial color (seamaster): blue wave

The Sinn 556I RS is a recent purchase from Watch Buys, bought on August 25.

• Condition: excellent
• Year: 2023
• Bracelet Type: OTF

The listing includes a Sinn 556i with its box and papers, a modified Casio AE-1200 with a black stainless steel case and sapphire crystal, and four NH3x builds from AliExpress parts. The items show some signs of wear. Great for those interested in watch modding or wanting to play around with different movements.

• Case diameter: 42mm
• Bracelet type: Uncle Seiko
• Strap type: original leather

The Sinn 556 I combines understated elegance with technical prowess, featuring a black dial and minimalist design.

• Condition: Excellent, some surface scratches on AR coating
• Case Material: Satinized stainless steel
• Diameter: 38.5mm
• Thickness: 11mm

A Sinn 556i RS sold as a full kit with various accessories, purchased in August 2025 and showing minimal signs of wear.

• Condition: Like new with minimal wear
• Bracelet type: Sinn H-Link Bracelet
• Movement accuracy: +1-3 s/d

A Sinn 556i watch with a Jan 2025 production date is being sold in its original box and papers. It comes with additional accessories.

• Condition: very good condition with minor wear on the clasp
• Box and papers included: true
• Extras: [object Object],[object Object]

This Sinn 556 I features an Ice Blue Guilloche dial, and the listing includes various straps and accessories such as the original box, papers, and manual. The watch has been worn for three months but remains in excellent condition.

• Condition: Excellent overall with light signs of wear
• Purchase Date: October 2025
• Straps: 2 straps (Uncle Bracelet and original grey strap) plus textile Sinn strap