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Mechanical alarm – IWC GST Alarm

Mechanical alarm – IWC GST Alarm

Last week I acquired the IWC GST alarm and since Boris LOVES mechanical alarm watches, I’d like to share a few pics. A link to a comprehensive review can be found on the bottom of this post.

The two crowns are a distinct feature of most alarm watches. Being based on the JlC 916, the alarm must be wound by hand.


The bracelets of the GST-line are very solid and well-built. IWC uses a unique system for changing out links but I can’t say I’m a big fan. Nice try though.

Pictured is the stainless steel model. Besides the case it can be distinquished from the titanium model by the dial – the Ti doesn’t have the applied markers. Strange enough the SS was more expensive.

A bit of background on the GST-line for the die-hards:

The GST was a line of sportswatches IWC carried up to a few years ago – I’m sorry, I don’t have the exact year. It consisted of several models, all featuring the same sporty case & bracelet design;

GST Aquatimer: a dive watch with external bezel, later replaced by one with internal bezel

This watch has gained somewhat of a cult status. It’s (IMHO?) one of the last no-nonsense dive watches made by IWC.

GST Aquatimer Deep One: a dive watch with mechanical depth gauge designed by Richard Habring

This watch featured the internal diving bezel also seen on the replacements of the 3536 divers.

GST Chrono-Automatic: an automatic chronograph (duh) with reasonable case size

While it might lack a unique feature or cult-status, this is a really pleasant watch for 24/7 wear.

GST Rattrapante: an automatich chronograph with rattrapante module designed by Richard Habring

Very cool but IMHO it lacks the balance seen in the Chrono-Automatic – the case is bigger & the dials are more busy.

GST Perpetual: an automatich chronograph with perpetual calender module designed by Kurt Klaus

One of my favourite perpetuals. The Kurt Klaus module is a classic on it’s own, wether it’s in the Da Vinci, a Flieger or this GST. It sparked a little revolution when released, in a time where perpetuals were almost exclusive to big players like Patek, AP and VC. And ofcourse, a sports watch with perpetual calender is just pimpin’.

GST Alarm: an alarm watch with automatic movement based on the JlC calibre 916

As seen above. A rather nice review of this watches was posted years ago on TimeZone: CLICKCLICK

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