====== Sinn 556 ======
{{wst>image_r|Sinn_556|Sinn 556}}
{{wst>image_r|Sinn_556_RS|Sinn 556, backside}}
**Ref. 556** is an entry-level wristwatch from [[Sinn]] produced since [[2008]].

===== Overview =====
The Frankfurt watch manufacturer [[Sinn]] offers this model as an entry-level watch since December, [[2007]]. It impresses with its clear appearance and the easy-to-read dial. For an affordable price, it is a high quality and reliable watch. It is equipped with a [[sapphire crystal]] glass with [[anti-glare treatment]] on both sides. The movement is the simple and robust [[ETA 2824-2]], visible through a display caseback with sapphire crystal.

The model 556 has an almost-identical case and dial to the then-current [[Sinn 656]], though the 556 features slightly different finishing and the [[display caseback]], which adds 1 mm in thickness. Both watches use the popular [[ETA 2824-2]] movement. The model 656 was retired from the catalog in [[2012]], leaving the 556 and new [[Sinn 856]] to take its place.

The watch uses a satin [[stainless steel]] case without the company's proprietary hardening or anti-moisture technologies. It does have a screw-down crown for pressure resistance to 20 bar, and meets [[DIN 8310]] requirements for waterproofing.

The original model 556 featured simple bar markers and a traditional date window at 3 00. This would be renamed model **556 I** in [[2011]] when the **556 A** with numerals at 3, 6, 9, and 12 was added. The 556 I was also offered with a [[mother of pearl]] (light or dark), blue, and brown dial, all with no date window.

In [[2013]], Sinn collaborated with the Stiftung Waisenhaus youth home and "Frankfurt am Main" naval ship to produce a commemorative model with the silhouette and ID number of the ship on the dial. The special 556 Anniversary model in [[2016]], a limited edition of 1,000 pieces celebrating 55 years for the brand, featured an anthracite dial and no date window.

===== References =====
  * 556 (2008-2010) - Bar markers, black dial, date window at 3 00
  * 556 A (2011-present) - Arabic numerals at 3, 6, 9, 12, date window at 4 30
  * 556 Anniversary (2016-2018) - Bar markers, anthracite dial, no date, limited to 1,000 pieces
  * 556 I (2011-present) - Bar markers, black dial, date window at 3 00
  * 556 I B (2018-present) - Bar markers, blue dial, no date
  * 556 I EGV Frankfurt am Main (2013) - 556 I with "Frankfurt am Main" naval ship silhouette and ID number A 14112 on the dial, not a limited edition
  * 556 I M (2016-present) - Bar markers, brown dial, no date
  * 556 I Mother-of-pearl S (2018-present) - 556 I with dark mother of pearl dial, no date
  * 556 I Mother-of-pearl W (2016-present) - 556 I with light mother of pearl dial, no date


<WRAP ud ud_mod>

**Movement:**
  * Mechanical movement ([[ETA 2824-2]]), 28,800 A/h
  * [[Automatic]]
  * [[Antimagnetic]] according to DIN 8309
  * [[Shock proof]] according to DIN 8308

**Case:**
  * [[Stainless steel]], [[satin-finished]]
  * Ø 38.5 mm, height 10.1 mm
  * [[Sapphire crystal]] with [[anti-glare treatment]] on both sides
  * Screwed down caseback, [[sapphire crystal]] with [[anti-glare treatment]] on the inside
  * [[Screw-in crown]] with double O ring sealing
  * [[Waterproof]] to 100 m
  * Safe below atmospheric pressure

**Dial:**
  * Hours, minutes, [[central seconds]], date

**Functions:**
  * Hour indexes with special white, long-lasting [[luminous]] paint 

**Bracelet:**
  * Leather- or metal bracelet

**Guarantee:**
  * 2 years

**Prize:**
  * Leather strap 
  * 490,- EUR
  * [[Satinated]] solid steel band with safety [[folding clasp]] 
  * 615,- EUR
  * [[Satinated]] small link steel band with [[butterfly clasp]] 
  * 705,- EUR
  * (as of 2/2008)
</WRAP>

{{tag>Watch_models Sinn_Pilot's_Watch_models}}