The Basics

The IWC GST Chronograph MecaQuartz is a small version of IWC”s GST Chronograph, powered by Jaeger-LeCoultre’s caliber 631 MecaQuartz chronograph movement. ‘GST’ stands for ‘Gold, Stahl, Titan’ and as such, the watch was available in either stainless steel, titanium or yellow gold. In each configuration the case measured a reasonable 34mm. Reference IW3727-03 has a stainless steel case and matching bracelet. The dial is silver.

Brand: IWC
Family: GST Aquatimer
Reference: IW3727-03
Name: GST Chronograph MecaQuartz Stainless Steel / Silver
Produced: 1999 – 2002
Limited: No

Below is a detailed look at IWC’s model IW3727-03 from GST Aquatimer watch family, including the price, case details and movement features.

IWC GST Aquatimer IW3727-03

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The Details

IWC’s GST Chronograph MecaQuartz Stainless Steel / Silver (IW3727-03) was originally released in 1999 – 2002. This watch features a quartz movement beating at a frequency of N/A (N/A Hz) to provide a -hour power reserve when fully wound.

The Case

The stainless steel case measures 34mm in diameter and roughly 11mm thick. The round case is paired with a silver color dial with stick-shaped hands, and a stick / dot hour markers and minute track, covered by a sapphire glass. IWC’s GST Aquatimer model IW3727-03 is water resistant up to 120 meters (394 ft). A solid caseback is over the back of the watch case.

Material: Stainless steel
Glass: Sapphire
Back: Solid
Shape: Round
Diameter: 34mm
Height: 11mm
Lug Width: N/Amm
W/R: 120

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The GST Aquatimer IW3727-03 movement is a powered by caliber 631 made by Jaeger-LeCoultre. The 25-jewel quartz movement is mm in diameter. Its balance wheel oscillates at N/A semi-oscillations per hour or N/A Hz. This movement offers a -hour power reserve.

Type: Quartz
Brand: Jaeger-LeCoultre
Caliber: 631
Base: N/A
Display: Analog
Diameter: mm
Jewels: 25
Reserve: hours
Frequency: N/A
Time: Hours, Minutes, Small Seconds
Chronograph: Chronograph

The Price

How much does the IWC’s GST Aquatimer IW3727-03 cost? This watch was introduced in 1999 and has been in IWC’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available

For more information, visit IWC online.


  • Brand: IWC
  • Model: GST Chronograph MecaQuartz Stainless Steel / Silver
  • Reference Number: IW3727-03
  • Limited: No

Case & Dial:

  • Material: Stainless steel
  • Glass: Sapphire
  • Back: Solid
  • Diameter: 34
  • Thickness: 11
  • Lug Width: N/A
  • Dial Color: Silver
  • Indexes: Stick / Dot and Stick-shaped hands
  • Water Resistance: 120 meters


  • Winding: Quartz
  • Brand: Jaeger-LeCoultre
  • Caliber: 631
  • Display: Analog
  • Diameter: mm
  • Jewels: 25
  • Power Reserve: hours
  • Frequency: N/A
  • Functions: Hours, Minutes, Small Seconds

About IWC

IWC logo

IWC is based in Schaffhausen, Switzerland, and was founded in 1868. Its signature lines are the Pilot’s Watches and the Portugieser, while other famous collections are the Aquatimer, Portofino and the Da Vinci. Many of IWC’s designs display a industrial type of beauty not often found in Swiss watchmaking. The same goes for its movements; while of very high standards, they are finished with an … engineers touch rather than that of an artist. One could very well say that IWC’s approach to watchmaking is more German in nature compared to many of its competitors; the ‘form follows function’ adagio is one held in high esteem in Schaffhausen. Notable watches and innovations created by IWC in the past include the digital ‘Pallweber’ pocket watch, the late 1930’s Portugieser, the 1985 Da Vinci with Kurt Klaus perpetual module, the split-seconds mechanism as designed by Richard Habring and the ceramic Da Vinci and Flieger 3705 – introduced many years before the material became fashionable. IWC also pioneered the use of titanium in wristwatches. In recent years, IWC has had a strong focus on in-house movements with prices rising accordingly. IWC is part of the Richemont group.

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