For Baselworld 2016, Casio has introduced one of the most impressively cool G-Shock watches in a while with the brand new model GWF-D1000 Frogman diver. Casio’s premier serious diving G-Shock watch has retained everything we love about a Casio G-Shock and has grown into the more serious diving computer we believe Casio has produced. Casio has finally developed a neat-looking tool that modern divers can use for more than basic timing information, as well as a timepiece that you can theoretically wear on a daily basis. It isn’t cheap, but this is one of the best G-Shock watches around that isn’t a novelty watch and is the exact kind of device that helped make G-Shock watches as popular as they are today.


According to Casio, the original G-Shock Frogman was introduced in 1993 and like many of their core collections has evolved over time as the company added more and more features to its G-Shock rescue diver. Many of those advancements were about making the Casio G-Shock Frogman a better watch such as making it more durable or solar-powered. For 2016, The Casio G-Shock Frogman GWF-D1000 family (which includes the reference GWF-D1000-1 and GWF-D1000B-1 (blue color accents) has been upgraded to incorporate the features of a relatively robust dive computer – while still retaining all the same features and conveniences of a Casio G-Shock.

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These convenience features include Casio’s full swathe of functions such as the “Tough Solar” light-powered movement, atomic clock radio signal accuracy control system, and intense case durability. Most of the inner case is actually DLC-coated steel and the Frogman is further water resistant to 200 meters. Casio also added three sensors which measure the temperature (in 0.1 centigrade increments), depth gauge, and compass.

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Casio really improved on the compass system and optimized it for diving use. The compass now comes with an automatic horizontal compensation system which allows the compass to be useful with a tilt of up to 80 degrees. This is very useful while swimming and needing to follow a particular directional bearing and not having to always adjust your arm to get a proper compass reading. This is really one of the major new innovations, and it is one that in various forms has and will make its way to other 2016 and future Casio compass watches.

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As a dive computer, the Casio G-Shock Frogman GWF-D1000 logs your dive time, tracking your depth, recording the water temperature, and logging the data for up to 20 dives. That means the Casio G-Shock Frogman GWF-D1000 acts as a more or less complete dive computer. What isn’t clear is whether or not the system suggests ascent times with decompression stops. However, the system does have an alarm if it thinks you are ascending too quickly. Yes, there are other dedicated dive computers with more functions to help professional and recreational divers with how long to stay down and when to come up, as well as help track remaining oxygen, but Casio designed the Casio G-Shock Frogman GWF-D1000 for serious use that is much closer to profession dive computers than ever before. I’d consider it to be a pro-level back-up diving computer for seasoned divers who know what they are doing, as well as a reliable backup diving computer for recreational divers. With that said there are a number of features that dedicated diving computers have which the Frogman doesn’t – so all divers should be aware of and understand their equipment before using them in a diving scenario.

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Casio also includes a range of time and calendar-related information such as moon phase indicator on the dial as well as a tide chart. You also get all the standard Casio G-Shock functions such as the stopwatch, countdown timer, alarms, etc… It really feels like the best of G-Shock suddenly became an even more serious tool watch for pros and nerds alike – though it would be hard to justify getting a Casio G-Shock Frogman GWF-D1000 if you never intended on taking it into the water.

On paper, this all sounds great but what does the 2016 Casio G-Shock Frogman GWF-D1000 feel like on the wrist? The first thing you notice when you hold the watch is how much more sturdy and solid it feels as compared to most less-expensive or less-engineered Casio G-Shock timepieces. The entire inner part of the case is black DLC-coated steel, which has the resin “armor” of all G-Shock timepieces. The screen is totally new as well, offering a better resolution and more crisp display. This isn’t the G-Shock watch you grew up with.

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Over the dial of the 53.3mm-wide (and 18mm-thick) Frogman case is a sapphire crystal. This isn’t the first time Casio has used a sapphire crystal on a G-Shock case, but you can imagine that such components are rare in the G-Shock collection. Style-wise, the Casio G-Shock Frogman GWF-D1000 isn’t trying to win any beauty contests, but succeeds in being a distinctly modern and very “G-Shock” tool watch that inspires the same amount of “nerd want” as any other high-performance tool watch.


I won’t lie in saying that the Casio G-Shock Frogman GWF-D1000 isn’t large, but it is wearable. Though, if I had a complaint, it would be that the included strap (which is carbon fiber reinforced) is a bit on the long side for daily wear on your wrist, as opposed to over a large dive suit. Casio designed the Casio G-Shock Frogman GWF-D1000 to be worn in very cold waters and, thus, over a dry suit. That means the standard strap is going to be a bit on the longer side. It is possible that Casio might come out with a shorter strap and include a diver’s extension strap. If they don’t then no doubt there will be after-market ways of wearing the Casio G-Shock Frogman GWF-D1000 on a smaller strap. Note that the new Casio G-Shock Frogman GWF-D1000 makes use of Casio’s new extra-durable strap and lug system which secures the strap to the case using a very solid carbon rod.


Enthusiasts will appreciate some of the more minor updates to the design of this newest generation Frogman, as well as the updated Frogman logo. The swimming frog character now wears a helmet and carries a flashlight. The implication is that the Frogman is is more durable and functional then ever. Nothing about the Casio G-Shock Frogman GWF-D1000 feels cheap, and the overall fit and finish are quite different than the G-Shock family’s more entry-level models.


In the scheme of diving computers, the Casio G-Shock Frogman GWF-D1000 isn’t the cheapest item nor is it the most expensive. Though, with the ability to never change a battery, for it to have full “watch functions,” in addition to being a legitimate dive computer, the price feels more than fair. Other aBlogtowatch team members who dive such as James and Max agree that the new Casio G-Shock Frogman GWF-D1000 is an amazing timepiece which they want to dive with as soon as possible. You might still want to dive with a more full-featured dive computer, but most will not serve well (or at all) as timepieces outside of the water – while the Casio G-Shock Frogman GWF-D1000 is good for both environments.

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I fully anticipate Casio to release a few more colors of the Casio G-Shock Frogman GWF-D1000 in addition to the standard black with red accents Casio G-Shock Frogman GWF-D1000 and the (currently not planned for official availability in the US) black and blue GWF-D1000B-1. With that said, those are the only two models available now.

If you are a regular diver then you will likely use the majority of the functions in the Casio G-Shock Frogman GWF-D1000 on a regular basis. If you are just a tech watch collector, you’ll love the looks, quality, and overall functionally of the Casio G-Shock Frogman GWF-D1000 and appreciate what it can do and how it is built compared to most other G-Shock watches. Price for the Casio G-Shock Frogman GWF-D1000 watches when they arrive in mid- to late-summer 2016 is about $1,000.


Water Resistance
ISO 200-meter water resistance
Radio Frequency
77.5 kHz (DCF77: Germany); 60 kHz (MSF: UK); 60 kHz (WWVB: USA); 40 kHz (JJY: Fukushima, Japan) / 60 kHz (JJY: Kyushu, Japan); 68.5 kHz (BPC: China)
Radio Wave Reception
Automatic reception up to six times a day (except for use in China: up to five times a day); manual reception
Diving Functions
Measuring range: 0 m to −80 m (−252.5 ft.); measuring unit: 0.1 m (0.5 ft.); dive time measurement up to 6 hours (1-second intervals up to 180 minutes, 1-minute intervals after 180 minutes); automatic measurement start/stop at depth of 1.5 meters (5 ft.) and automatic log memory in Diving Mode; surface interval time display (max. 48 hours); excessive ascent rate alarm
Log Data
Records 20 diving logs (including dive start time, dive time, maximum depth, and lowest water temperature)
Digital Compass
0–359 degree compass bearing measurement, direction displayed as one of 16 points (no display in Diving Mode), 60 seconds continuous measurement (20 seconds in Diving Mode), North-South-West-East graphic display, bearing memory, auto horizontal compensation, bidirectional calibration, magnetic declination correction
Measuring range: −10 to 60°C (14 to 140°F); measuring unit: 0.1°C
Time Stamp
Records 20 date and time sets (also records water depth and temperature bearing during water depth measurement, bearing during compass bearing measurement, and temperature during temperature measurement)
Moon Data
Moon age of the specific date, moon phase graph
Tide graph
Tide: 6 levels
World Time
48 cities (31 time zones; daylight saving on/off) and Coordinated Universal Time (UTC); direct access to UTC
1/100 second stopwatch; 100-hour time counter (with split)
Countdown Timer
Measuring unit: 1 minute; input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
5 independent daily alarms (1 snooze alarm); hourly time signal
Other Functions
Battery level indicator; full auto-calendar; 12/24-hour format; button operation tone on/off; full auto LED backlight with afterglow:1.5/3.0 seconds
Power Source
Tough Solar power system (solar-charging system)
Continuous Operation

About 23 months with the power-saving function* ON after full charge

* Power-saving after a certain period in a dark location

Size of Case
Total Weight

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