====== Sinn 657 ======
{{wst>image_r|Sinn_657|Sinn 657}}
{{wst>image_r|Sinn_657_S|Sinn 657 S}}
Model **657** is a [[pilot's watch]] by [[Sinn]] produced from [[2005]] through [[2012]].

===== Overview =====
[[Pilot's watch]] with non-detachable rotating bezel, which convinces by the clear appearance and the easy to read dial. It also has some interesting technical features such as [[magnetic field protection]] or high [[water resistance]].

Model 657 was a companion model to the existing [[Sinn 656|model 656]]. The primary difference was a larger case and the addition of the rotating bezel. A "Pilot" model was added in December [[2005]], though it was not much different from the other models. The model 657 was retired from the catalog in [[2012]], leaving the larger [[Sinn 857]] to take its place.

===== References =====
  * 657 (2005-2012)
  * 657 PILOT (2006-2007)
  * 657 S (2008-2011)


<WRAP ud ud_mod>

**Movement:**
  * Mechanical movement ([[ETA 2824-2]]), 28,800 A/h
  * [[Automatic]]
  * [[Magnetic field protection]] up to 80.000 A/m
  * [[Shock proof]] according to DIN 8308

**Case:**
  * [[Stainless steel]] / black chroming
  * Ø 40.0 mm, height 12.0 mm
  * [[Sapphire crystal]] with [[anti-glare treatment]] on both sides
  * Non-detachable bidirectional rotating [[bezel]]
  * Nickel-free caseback, screwed
  * [[Screw-in crown]] with double O-ring seal
  * [[Waterproof]] to 200 m
  * Safe below atmospheric pressure
  * 
  * **Functions **
  * Hours, minutes, seconds, date

**Dial:**
  * Black, high-gloss [[polished]]
  * Hour indizes and hands coated with [[superluminova]] 

**Bracelet: **
  * Leather or metal bracelet

**Warranty: **
  * 2 years
</WRAP>

{{tag>Watch_models Sinn_Pilot's_Watch_models}}