G-LIDE GBX-100 is the best G-Shock tide watch, with caveats

G-Shock GBX-100 Tide and Moon Graph Display

The G-Shock G-LIDE GBX-100 has a lot going for it, including a step counter with fitness features, Bluetooth with smartphone notifications, vibration alerts, and a design that is more in tune with the traditional and compact square style of G-Shock. That’s all great, but most of those features are shared with the G-SQUAD/MOVE GBD-100, and the tide mode, along with its unique style, is what sets the GBX-100 apart.

The GBX-100 is the first G-Shock watch to display the tide height measurement in centimeters or feet for low and high tides. No other G-Shock watch with a tide graph currently does this. Some, like the GWX-5600, GWX-5700, and GPR-B1000 Rangeman, went beyond the basic tide graph and showed the relative size of tide changes with spring, intermediate, and neap tide indicators, but without any precise height metrics.

Another advantage of the GBX-100 is that tide information is available for 3,300 ports worldwide, which can be selected through the G-Shock MOVE app. The tidal movements of different ports in the same city can occur at different times, so this setting offers more precise information. There are also 50 preset ports that can be selected using the watch without a smartphone. Custom points can also be set by the user on the watch without using the smartphone app. If using a custom point, the tide height measurements are not available, and only the tide cycle information will be displayed. To add a custom point, the user must specify latitude and longitude, high tide time, UTC time offset, and DST on/off. Up to three custom points can be set.

Unlike other G-Shock tide watches, with the exception of the GPR-B1000 and GWN-Q1000, the GBX-100 also includes sunrise and sunset times. It also has moon age data and a moon graph.

The image below from the GBX-100 instruction manual shows the three displays for the tide mode, which is available from timekeeping mode by pressing the lower-right (D) button. Pressing the button will cycle through the different display modes with each press. The tide mode also includes the moon age and graph and sunsrise/sunset times. The first screen is an overview of the tide, moon, and sun data with the upcoming high or low tide time and height. The second screen focuses on the tide data and also highlights the sunshine hours on the daily tide graph. The third screen focuses on the sunrise/sunset times and moon age data and graph that are also shown on the first screen, and presents them in a larger size.

Key: 1. Port name 2. Sunrise Time 3. Sunset Time 4. Moon Graph and Moon Age 5. Tide Graph (12 hours) 6. High Tide and Low Tide Time and Levels 7. Tide Cycle (L – Spring Tide, M – Half Tide, S – Neap Tide) 8. Tide Graph (24 hours) 9. Sunshine Hours 10. Tide Level/Tide Cycle (Tide cycle is shown for custom point) 11. Day (Date at Port)

Casio says of the tide mode, “Displayed information is intended for reference only. Do not use it for maritime navigation, etc.”

One feature from other G-Shock tide watches that is notably absent, according to the manual, is the ability to check the tide levels for a specific day in the future, or a specific time on a future day. This may put some people off, and we can’t explain why this feature wasn’t included. Perhaps Casio does not want people to rely solely on the watch for activity planning because of liability reasons, as activities involving the ocean and tides can be very dangerous. Whatever the reason, its omission seems like a step back. Also, only one port can be set at a time, so there is no way to quickly view information for other ports without having to change the setting with the smartphone app or one of the 50 presets.

Another apparent shortcoming is that the time and height information for only one high tide and one low tide is shown, presumably in relation to the current time. In most places, there are two tidal cycles a day, meaning two high tides and two low tides in a 24-hour period, so it would have been nice for the second tide screen to display information for all of these, or at least offer the ability to cycle through them. In the second display mode, it appears that all the cycles are shown graphically for a 24 hour period, but measurement information is only provided for one cycle.

Keep in mind that we are assuming all of this based on the manual, and we have not actually used the watch yet.

The GBX-100 is a welcome addition for those who want more tide information on a G-Shock, though it may not end up replacing your tide calendar or app. The GBX-100 series (GBX100 in the U.S.) will be released in mid-June 2020, with a list price of $160 each.

Reeds Jewelers is now accepting pre-orders for the GBX100 series.

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Gary
Gary
2 years ago

Does the tide data for the current day depend on a connection to the app, or is it independently calculated by the watch?

It’s too bad it’s not possible to scroll through the tide info by the time or the date.

The lack of a Southern Hemisphere moon phase graphic is puzzling. I think all other Casio moon phase watches made since 2010 have this capability, including the inexpensive W-S210.

Ivo
Ivo
2 years ago

“Also, a port needs to be selected from the app or presets to display the moon age and sunrise/sunset times”
So it means it’s strictly for a seaside use? I mean, this information is unavailable inland?
I was so into this watch 🙁

[G-Central Update: The statement you quoted was incorrect and the article has been edited to reflect that. Moon age and sunrise/sunset times should also work with user-defined ports.]

Joe Colville
Joe Colville
2 years ago

I thought they were releasing this month, I keep checking sites daily. Wish they would set an exact date.

Treevill
Treevill
2 years ago

Casio presented three color versions of this watch. They all have a negative display. Will there be another version but with a positive display?

mike
mike
2 years ago

Does anyone know where to find the list of ports? Is sunrise/sunset based on the selected port or lat/lon or is it simply on selected time zone? This time of year sunrise is 45 minutes earlier in NYC than where I live, and with the seasonal variation if it’s set by the major city in the time zone it’s essentially useless. I can’t believe that it would be that way but I read some posts about the Rangeman (I think) that made it seem like it was based on time zone only. Thanks!

Gary
Gary
2 years ago
Reply to  mike

You can set up to three user-defined ports. These include specifying the longitude and latitude, so this should provide the correct sunrise/sunset times. The custom ports also allow specifying the tide time, UTC offset and DST on/off.

Ad
Ad
2 years ago

need tough solar

Fiz
Fiz
2 years ago

Since this watch uses non-chargeable batteries (not solar), how fast will this watch run through the batteries? I would think if this watch is connected to your smartphone with blue-tooth and showing notifications (text/calls) it would deplete the battery pretty quickly….

Mr Mannu C Gilani
Mr Mannu C Gilani
2 years ago

I have this watch and am using a custom tide point which in My case is Westward Ho! in North Devon,England and its actually pretty accurate when checked with tide charts.

Mark Shepherd
Mark Shepherd
2 months ago

I’m finding these custom points more difficult than they ought to be to set up. I’m in London on a tidal stretch of the Thames with correct co-ordinates entered. When I enter a high tide time, the time that gets reflected on the graph is over 2 hours ahead of what I input. For example, high tide tomorrow is 5:26, I have to enter 3:36 for the watch to show 5:26. I’ve tried to figure out why the watch won’t simply accept the time I put in, it’s not practical and not logical. The manual is also useless, it only states the obvious rather than explaining why things work the way they do.

The app is also pretty crap, it won’t send preset ports or custom points to the watch so all the input is done on the watch itself. Any advice from any experienced users?

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