Three years after G-Shock released the DWH5600 they issued an updated version into their surfing line, the G-Lide GBX5600. I got the blue one to see what updates have been brought to the software, how the body of the watch fares with its updates, and to test first-hand the battery life.

At this point, there are a number of iterations of the MIP square with heart-rate monitor and fitness features. The original was the black DWH5600. A few different color variations came out, such as a white and blue one. (As I’m writing this, both of those are on sale! Click through to see if they are still available!)

Just this year, G-Shock took the DWH5600, which I call the “Square Heart,” and upgraded the bezel to silver or gold and replaced the back plate with a carbon fiber material. The metal bezel model is the GMH5600.

Now the G-Lide GBXH5600 is here in two standard colors, blue and black. There’s a limited edition available in some asian markets that has a brown bezel and band together with purple highlights on the text. It’s a colaboration model with Japanese surfer, Kanoa Igarashi.

In my most recent YouTube video, I put the first edition DWH5600 head-to-head with the GBXH5600.

What’s Changed?

After a few weeks of wearing the GBX5600 to work and to work out, I can say that, unfortunately not much has changed. The quirks of the Square Heart have carried on to the G-Line version. Sluggish, hard to press buttons, cumbersome interface, and primitive fitness features are still there.

On the software side, the GBXH5600 introduces a tide graph feature. With the Casio Watches app, you can select a city from the coastline of planet earth and see the tide data on the home screen of the watch or in a dedicated Tide widget.

This creates a dichotomy between the two watch models similar to that of the Rangeman GPR-H1000 and the GBD-H2000. The 3rd Gen Rangeman was essentially the same module as the GBD-H2000 but they included a Tide Graph widget and Trekking exercise function to differentiate them.

Metal vs. Carbon Fiber

On the body of the watch, the GBXH5600 has a carbon fiber reinforced resin back, rather than the metal on the DWH5600. This allows for noticeable weight difference!

To prove how much lighter the GBXH5600 was to the DWH5600, I rapped them into my own knuckles repeatedly. The DWH5600 cause pain. The GBXH5600 caused mere discomfort. So the weight of the watch is improved!

The bezel of the GBX5600 is translucent. If your a veteran of G-Shock ownership, you know what will happen next: Browning!

The bezels are so easy to swap, I’d recommend getting a GBXH5600 and when it browns like a banana, just get a new bezel. The big problem is that I have not seen any replacement bezels. Not even on Ali-Express!

Video Summary

Rather than retype all that I said in the video, I’m just going to feed it into an AI chatbot. I dread to see what it turns up. I held up a lot of different watches and said “this one” or “that one” and I’m not sure the AI can keep up with what’s going on.

It could take so many prompts to get a usable summary. They say AI makes like easier. I spend more time than I ever have wordsmithing prompts to get basic answers. Anyways, here’s Google’s Gemini AI summary of my YouTube video:

Casio G-Shock DW-H5600 vs. G-LIDE GBX-H5600: 3-Year Durability, Hardware Changes & The Truth About Firmware Updates

Three years after the initial release of the Casio G-Shock DW-H5600, Casio launched an aquatic-focused update under the surf-oriented banner: the G-LIDE GBX-H5600. In this comprehensive side-by-side comparison, Jim Kinkade delivers an honest, hard-use perspective on what actually changed, how both models perform in everyday conditions, and whether the upgrades justify picking up the newer square.

Key Hardware & Ergonomic Differences

While both watches utilize the high-contrast Memory-in-Pixel (MIP) LCD, several key physical design changes set them apart:

• Composite vs. Stainless Steel Case Back: The DW-H5600 features a traditional, heavier stainless steel backplate, whereas the GBX-H5600 incorporates a lightweight carbon-reinforced composite/resin back. This significantly reduces overall case weight, wrist inertia, and top-heavy “flop” when in motion.
• Optical Sensor Housing & “Paw Print” Comfort: The raised optical heart rate monitor on the older DW-H5600 earned a reputation for leaving a prominent “paw print” indentation on the wrist until fully broken in. The GBX-H5600 refines the sensor profile, reducing deep wrist fatigue and pressure marks, though the sensor edges feel slightly more pronounced to the touch.
• Tool-Less Modular Bezel Swapping: Both squares feature a hot-swappable snap-off bezel design held primarily by the button layout and integrated retention clips, allowing bezels to be swapped in seconds without tools.

Battery Life: Solar Assist vs. Continuous Heart Rate Tracking

Managing battery expectations on G-Shock smart fitness squares comes down to how you configure the optical heart rate sensor:

• Time-Only Mode (HR Off): With the optical heart rate monitor turned off and basic Bluetooth connectivity, both models can easily run for over a year (and upwards of 1.5+ years) on solar trickle charging alone—especially in high-sunlight regions like Texas.
• Continuous 24/7 Heart Rate Tracking: Activating full-time heart rate monitoring causes rapid power consumption, dropping battery longevity down to roughly 7 to 15 days before requiring the proprietary clamp charger.
• Smart Monitoring (Night & Activity Only): Users can customize the watch or Casio Watches app to run HR tracking strictly during sleep assessment and tracked workouts, striking a balance between data and battery reserve.
• Charging Hardware Upgrade: Jim highlights the reliability of aftermarket USB-C clamp chargers. Unlike the fixed OEM USB-A factory cable, female USB-C modular clamps allow users to swap damaged cables without replacing the entire charging unit—a major plus for truck and travel use.

Software Realities: The Tide Graph & Missing Swimming Profile

• The Firmware Myth: Despite years of community hopes for major UI streamlining, the firmware navigation remains largely unchanged across both models. Users still encounter multi-step menu diving and confirm/exit button presses rather than the instant single-button mode cycling found on classic digital squares like the GW-M5610.
• Tide Tracker Addition: The primary software addition to the GBX-H5600 is the integrated Tide Graph screen on the main display, easily calibrated to specific coastal locations (such as Corpus Christi or Honolulu) through the Casio Watches smartphone app.
• The Aquatic G-LIDE Omission: Despite its surf heritage and nautical G-LIDE branding, the GBX-H5600 notably omits a dedicated pool or open-water swimming workout profile, restricting native tracking modes to running, walking, gym workouts, and interval timers.

Resin Aging & Colorway Longevity

Jim addresses the aesthetic longevity of clear resin G-Shocks. Translucent and clear bezels—like those on the standard black/translucent GBX-H5600—naturally oxidize under UV exposure, eventually taking on a “Coke bottle” amber/brown patina that cannot be reversed by chemical cleaning. For wearers who prefer color stability over time, solid resin variants or limited-edition matte colorways (such as the Kanoa Igarashi signature surf edition) avoid translucent discoloration.

The Bottom Line

If you want a lighter MIP square that stays planted on the wrist with less top-heavy wobble and includes native tide tracking, the GBX-H5600 offers genuine ergonomic improvements over the original DW-H5600. However, both watches share the same core software architecture, making battery configuration and realistic expectations about Casio’s firmware ecosystem essential for everyday wearers.

Conclusion

The AI mentioned the third-party USB charger. Yes, click here to buy one. The advantage of this one over G-Shock’s is that you can plug in any old USB-C cable. You should buy one even if your current charger is working. That way you’ll have an extra one on hand.

Surprisingly, Gemini AI did a decent job organizing my rambling mess of a YouTube video. It’s definitely improving!