====== Sinn 140 ======
The **Ref. 140** "Space Chronograph" is a [[chronograph]] watch from [[Sinn]], one of the first used in space.

===== Overview =====
The original Ref. 140 chronograph was a large cushion case design with semi-hidden lugs and an extra crown at 10 00 to rotate the inner [[bezel]]. It used a [[Lemania 5100]] movement with an unusual configuration Chronograph seconds and minutes are counted with hands on the main dial and a 12 hour chronograph register is placed at 6 00. [[Small seconds]] is at 9 00 and the day and date is at 3 00. The original Ref. 140 also used a [[PVD]] coated steel case.

In [[1985]], a commercial Sinn 140 was brought to Spacelab by German astronaut Reinhard Furrer. This, along with the futuristic looks, earned it the name, "Space Chronograph". This was the first [[automatic watch]] used in space, and proved that an automatic [[rotor]] would function correctly in zero gravity.

===== 2012 reissue =====
In [[2012]], Sinn relaunched the Ref. 140 Space Chronograph. The new model uses a modified [[Valjoux 7750]] movement and [[TEGIMENT]] steel case but looks nearly identical to the original. The new movement has the same features and indications as the original but removes the day wheel, leaving only the date at 3 00.

==== Modern References ====
  * Sinn 140 A (2012-2014)
  * Sinn 140 St (2012-present)
  * Sinn 140 St S (2012-present) - Black coated


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**Movement:**
  * [[Self-winding]] movement [[SZ01]], 28,800 A/h
  * 28 [[jewels]]
  * [[Anti-magnetic]] per [[DIN 8309]]

**Case:**
  * [[Stainless steel]], bead blasted, [[TEGIMENT]] treated
  * Ø 44 mm, height 15 mm
  * [[Sapphire crystal]], [[anti-glare treatment]] on both sides
  * Interior rotating bezel numbered in 60 increments clockwise
  * [[D3]] crown and pushers
  * [[Ar-Dehumidifying system]]
  * [[Waterproof]] per [[DIN 8310]]

**Dial:**
  * Black
  * Hands and indexes coated with highest luminosity

**Functions:**
  * Central hour and minute hands
  * Central [[chronograph hour]]s and [[chronograph minutes|minutes]]
  * [[Date window]] at 3 00
  * 12 hour chronograph hours at 6 00
  * [[Small seconds]] at 9 00

**Bracelet:**
  * Optional with massive bead-blasted [[stainless steel]] bracelet or with cowhide leather strap

**Production:**
  * Production [[2012]]-Present
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{{tag>Sinn_Instrument_Chronograph_models Chronographs}}