Casio G-Shock “Torture Test”: Freezing the Casio G-Shock GA-700

The Casio G-Shock GA-700 was frozen for 48 hours. Did it survive the freezing ordeal? The photo of the Casio G-Shock GA-700 as seen above was taken when it was frozen for more than 1 day (around 26 hours) in the freezer compartment. Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

The Casio G-Shock is a highly robust watch and perhaps one of the most famous tests it had to pass before it was eventually launched was the secret experiments conducted by Kikuo Ibe, the father of the G-Shock, and his team from the third-floor restroom of Casio’s research and development building.

Watches were flung out from the restroom window and they landed outside the building. Through these “drop” tests, Ibe and his team could assess how their secret prototype watches were able to withstand a drop from the height of 10 metres or around 33 feet.

They succeeded in creating a protective “armour” for the quartz movement that could withstand the extremes and the very first G-Shock was launched in 1983 and the rest, as they say, is history.

What about thermal shocks? Will Casio’s G-Shock be able to withstand extreme temperatures?

Well, to find out, the Casio G-Shock GA-700 was put to the test. The first experiment was to freeze the G-Shock for two days or 48 hours. Will the G-Shock freeze up and “die”?

Our extreme cold “torture test” began by filling up a bowl with water that contained the Casio G-Shock GA-700 before placing it in the freezer compartment for 48 hours. Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

Our freeze “torture test” began on 24 April 2017 at around 10.15pm after we placed the G-Shock GA-700 that was in a bowl filled with water into the freezer compartment.

Bear in mind that the G-Shock GA-700 is water-resistant to 200 metres and do note that the average temperature in the freezer compartment is minus 16 degrees Celsius or 3.2 degrees Fahrenheit.

The Casio G-Shock GA-700 after close to 10 hours in the freezer. It was still ticking as we could see that the minute hand was still moving. Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

Our video below, uploaded to youtube, provides a good visual overview of what the Casio G-Shock GA-700 underwent during its 50-hour torture test.


Video source: YouTube, TimeWerke Videos

The G-Shock GA-700 was taken out some 24 hours later and it was frozen in a block of ice.

We took it out again after 48 hours and defrosting began.

The Casio G-Shock GA-700 defrosting after 48 hours in the freezer. The average freezer temperature is minus 16 degrees Celsius or 3.2 degrees Fahrenheit. Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

At around 12.30 am on 27 April 2017 as the block of ice was melting, you can clearly see the minute hand of the Casio GA-700 moving through the time-lapse video (Reference: the TimeWerke Video above).

View from the rear after 48 hours of freezing. The entire Casio G-Shock GA-700 was frozen in ice. Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

When we checked the time display on the Casio G-Shock GA-700 at 1am on 27 April 2017, it was still in sync with the time on our iPhone despite having undergone 48 hours of sub-zero temperatures and a further 2 hours of defrosting time.

After being frozen for 2 days (48 hours) and defrosting for another 2 hours, the Casio G-Shock GA-700 was still in working condition and its time remained in sync with our iPhone. Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

The Casio G-Shock GA-700 did not freeze up; it survived, living up to its G-Shock reputation.

TimeWerke now has a YouTube video channel. More Casio G-Shock torture test videos can be found on our TimeWerke Videos channel. Visit TimeWerke Videos on YouTube and be informed and entertained.

Our very first TimeWerke video, uploaded on 21 June 2017, is a short dive video with Seiko’s Prospex “Tuna” SRPA99K1.

Green Prospects: Seiko Prospex “Tuna” SRPA99K1 “Green Sea Turtle”

Seiko Prospex Tuna SRPA99K1 “Green Sea Turtle”. Introduced in June 2017, this SRPA99K1 is limited to 1,881 pieces. The recommended retail price (at the time of writing) is SGD981.20 (inclusive of tax). Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

The Seiko Prospex “Tuna” SRPA99K1, launched on 1 June 2017, is a special watch for it is a limited edition piece made for five countries/territories; namely, Hong Kong, Macau, Brunei, Malaysia and Singapore thanks to Thong Sia Watch Co., Ltd, the exclusive distributor for Seiko timepieces in this part of the world.

Limited to 1,881 pieces and water-resistant to 200 metres or 656 feet, what sets this Thong Sia exclusive Seiko Prospex Tuna SRPA99K1 apart from the rest is its green dial. It is complemented by its blue ceramic bezel.

The SRPA99K1 is powered by the Calibre 4R36 automatic movement and housed in a steel case that is further protected by a blue ceramic outer case or shroud.

The Prospex Tuna SRPA99K1 comes with a blue snake belly-style silicone accordion strap, a design that allows for the band to be expanded over a diver’s suit.

This Seiko Prospex SRPA99K1 is a limited edition piece for Hong Kong, Macau, Malaysia, Brunei and Singapore. It is an exclusive piece made for Thong Sia Watch Co., Ltd. In Singapore, it is available for sale at Seiko boutiques, City Chain stores and Seiko authorized dealers (while stocks last). Photo: © TANG Portfolio / TimeWerke. Elfa / Timmy.

Why is the Seiko Prospex Tuna SRPA99K1 dial in green?

Well, the good folks at Thong Sia adopted the colour green because they took their inspiration from the endangered green sea turtle, otherwise known by the scientific name Celonia mydas.

This watch is therefore not just known as a “Tuna” but a “Green Sea Turtle” – the Seiko Prospex Tuna SRPA99K1 “Green Sea Turtle”.

The green sea turtle is so-named not because of its “clothing” or “protective armour”; rather, it is termed “green” because of the colour of its body fat or internal fat tissue due to its diet. The green sea turtle feeds mainly on sea grass and algae.

Depending on the species and its habitat, the green sea turtle’s wide shell or carapace can be olive-green, greenish-brown, reddish-brown and even black.

TimeWerke now has a YouTube video channel. Visit TimeWerke Videos and be informed and entertained.

Our very first TimeWerke video, uploaded on 21 June 2017, is on a dive we took with this very Seiko Prospex Tuna SRPA99K1 “Green Sea Turtle” on a trip to Tioman in Malaysia between 15 and 18 June 2017.