Casio G-Shock

Long-term owners

out of my whole collection, that's the one that will still be within a ms of true time 25 years after the power goes out

Mar 2026 · comment

Gshock on the other hand will work for 10-15 years without a single manual time adjustment or battery swap needed.

Jul 2026 · comment

Meanwhile, a G-Shock was designed to have a battery life of 10 years

May 2026 · comment

What hackers pick instead

• Casio watchPeople recommend Casio digital watches for battery life measured in years, low price and simple, durable use. Critics say the backlight is weak and the interface is hard to use.49recommend
• Casio F-91WCheap, simple, and durable digital watch that often runs for years on one battery, with a strong mod community. Critics say the backlight is weak and the strap is small.47recommend
• Casio F-B100WFans praise its simple classic design, long two-year battery life and reliable time, though it lacks notifications and a usable app.40recommend
• Casio Wave CeptorPeople recommend it for a solar, radio-controlled titanium watch that never needs batteries or setting and keeps accurate time.5recommend
• Casio F-105WA successor to the F-91W that people prefer for its better backlight over the older Illuminator model. The most common caveat is a lower-contrast display that is harder to read in daylight.5recommend

Every quote

The 40 most detailed of 67 comments. Each links to the original.

1. Casio watches especially gschock really feel like they solved the goal of watches. Let people know the time accurately and cheaply.

   Recommends · Oct 2026 · in “Casio Watches of the 1980s”

2. out of my whole collection, that's the one that will still be within a ms of true time 25 years after the power goes out

   Recommends · Mar 2026 · in “The Brand Age”

3. But I think they never went far enough, and design a good looking digital g-shock with big time and date, nothing else.

   Mixed · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

4. Gshock on the other hand will work for 10-15 years without a single manual time adjustment or battery swap needed.

   Recommends · Jul 2026 · in “Canada's only watchmaking school still ticking after 80 years”

5. it's insanely durable construction and battery life means it'll be the only digital watch you'll ever need to buy

   Recommends · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

6. one thing Casio continues to do is produce good value digital watches and at the lower price points

   Recommends · Nov 2025 · in “The history of Casio watches”

7. This is why I bought a Casio G-shock smartwatch. I use my watch primarily as a watch

   Recommends · Aug 2026 · in “Pixel Watch 5”

8. Those keep accurate time with no maintenance. That's an impressive achievement.

   Recommends · Feb 2026 · in “Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock”

9. my $30 Casio G-Shock does pretty much everything I want with zero-maintenance

   Recommends · Oct 2026 · in “New Withings Users Must Pay $99/Year for Apple Health Syncing”

10. Quartz, solar powered, radio synchronized, and basically indestructible.

    Recommends · Oct 2026 · in “Casio Watches of the 1980s”

11. Gshock metal square (like the photo I referenced) never failed on me

    Recommends · Jul 2026 · in “Canada's only watchmaking school still ticking after 80 years”

12. started buying G shocks because I don’t want notifications

    Recommends · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

13. It was still telling the correct time to within a minute.

    Recommends · Jul 2026 · in “Canada's only watchmaking school still ticking after 80 years”

14. Really water resistant. No attention grabber. Just works.

    Recommends · Apr 2026 · in “The Last Quiet Thing”

15. it's a great watch that has withstood some serious abuse

    Recommends · Mar 2026 · in “The Brand Age”

16. It's hard to break. It's unbothered by water, mud, etc.

    Recommends · Oct 2026 · in “William Gibson and the trademarking of cyberspace”

17. I am actually glad it is not connected to my phone

    Recommends · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

18. It's far too chunky at 17mm (that's 0.66 inches)

    Mixed · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”

19. Yay for the heart rate, boo for the smartphone.

    Mixed · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”

20. Casio still offers value for a good price

    Recommends · Nov 2025 · in “The history of Casio watches”

21. Like their G-Shock watches, the actual area dedicated to showing the time is overwhelmed by superfluous elements

    Criticizes · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

22. I would have to buy bulky and super expensive gshock with GPS and tons of useless festures

    Criticizes · Apr 2026 · in “The Last Quiet Thing”

23. automatic time correction is the best reason we found for mandating smartphone pairing

    Criticizes · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”

24. bulky and super expensive gshock with GPS and tons of useless festures

    Criticizes · Apr 2026 · in “The Last Quiet Thing”

25. the chunky G-SHOCK bodies that have pulse monitors

    Criticizes · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

26. The G shocks have the same new abysmal backlight.

    Criticizes · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

27. the G-shock, the Garmin watches, or the Apple Watch run circles around mechanical watches in terms of functionality

    Recommends · Jul 2026 · in “Canada's only watchmaking school still ticking after 80 years”

28. I have recommended G-Shocks in the past, to people that, like yourself, like to be out there and do stuff

    Recommends · Oct 2026 · in “Casio Watches of the 1980s”

29. the watch falls back to effectively unlimited watch-mode instead of shutting down completely

    Recommends · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”

30. The only thing I would have wanted from gshock is having more apocalypse-level accuracy

    Mixed · Jul 2026 · in “Canada's only watchmaking school still ticking after 80 years”

31. I believe it's pretty smart. Keep the core functions intact when the battery goes flat.

    Recommends · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”

32. On the principal menu of my G-Shock, I have the time on ~80% of the screen.

    Mixed · Aug 2026 · in “New Casio F-B100W – Upgrade to the iconic F-91W after 40 years”

33. Only weak point is the resin strap, which needs replacing every few years.

    Mixed · Nov 2025 · in “The history of Casio watches”

34. Meanwhile, a G-Shock was designed to have a battery life of 10 years

    Recommends · May 2026 · in “Removable batteries in smartphones will be mandatory in the EU starting in 2027”

35. a Casio would be the fitting watch to wear while wielding this work

    Recommends · May 2026 · in “Casio S100X Japanese Lacquer Edition (JP Page Only)”

36. it was a great watch, I have a lot of sentimentality towards it

    Recommends · Nov 2025 · in “The history of Casio watches”

37. I still put on a g-shock if I absolutely have to know the time

    Mixed · Nov 2025 · in “The history of Casio watches”

38. they both just traveled with a G-Shock for some peace of mind

    Mixed · Oct 2026 · in “Casio Watches of the 1980s”

39. I have a couple analog/digital G-shocks that look very nice.

    Recommends · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”

40. I have a gshock already (GM-B2100D-1A) and I love it

    Recommends · Apr 2026 · in “First G-SHOCK with a heart rate monitor, also featuring Smartphone Link”