Casio G-Shock GBD-H2000 vs Garmin Forerunner 265
Casio G-Shock GBD-H2000 (2023, listed at $399) and Garmin Forerunner 265 (2023, listed at $449) are both sport watches, so the choice comes down to specifics.
Specs last updated · prices are list prices

Casio G-Shock GBD-H2000
True G-Shock toughness with GPS, optical HR and solar-assist charging — bombproof training partner.

Garmin Forerunner 265
Mid-range runner's pick — bright AMOLED, training load focus, race predictor.
The verdict
On the numbers we track, Casio G-Shock GBD-H2000 wins on price ($399 vs $449) and water rating (20ATM vs 5ATM); Garmin Forerunner 265 wins on battery life (13 days vs 12 days), weight (47 g vs 63 g) and tracked features (5 vs 2).
Bottom line: on raw specs the Garmin Forerunner 265 leads 3 to 2, but five spec categories are only a starting point. Match it to your phone, your main sport and your budget before you decide, or run the free quiz to see how each ranks for your answers.
Spec by spec
| Spec | Casio G-Shock GBD-H2000 | Garmin Forerunner 265 |
|---|---|---|
| Battery (rated) | 12 days | 13 days |
| Weight | 63 g | 47 g |
| List price | $399 | $449 |
| Water rating | 20ATM | 5ATM |
| Tracked features | 2 | 5 |
| Case size | 52 mm | 46 mm |
| Display | MIP | AMOLED |
| Works with | both iPhone and Android | both iPhone and Android |
| Listed best for | outdoor adventure, running and multisport and triathlon | running and multisport and triathlon |
| Released | 2023 | 2023 |
Trophy marks the better value on the five measurable specs. Battery is the manufacturer's rating, not our test. How we score is on the methodology page.
Feature overlap
Both have (2)
- built-in GPS
- blood-oxygen (SpO₂)
Only Casio G-Shock GBD-H2000 (0)
Nothing unique.
Only Garmin Forerunner 265 (3)
- on-device music
- AMOLED display
- swim tracking
Which one should you pick?
Pick the Casio G-Shock GBD-H2000 if…
- You want to spend less: it lists for $50 less.
- Your main use is outdoor adventure: it is listed for that and the Garmin Forerunner 265 is not.
- You might switch phones: it works with both iPhone and Android, the Garmin Forerunner 265 only works with Android.
- You swim or paddle: 20ATM vs 5ATM.
- You want a display that stays readable in direct sun and sips power.
Skip it if…
- • You have a small wrist (under about 160 mm) — the 52 mm case we list is large (check whether a smaller size is sold).
- • You want a bright, vivid AMOLED screen — this one uses a lower-power display.
Pick the Garmin Forerunner 265 if…
- You want fewer charges: about 13 days per charge vs 12 days.
- You want a lighter watch: 47 g vs 63 g.
- You need on-device music, AMOLED display and swim tracking, which the Casio G-Shock GBD-H2000 does not list.
- You might switch phones: it works with both iPhone and Android, the Casio G-Shock GBD-H2000 only works with Android.
- You want a bright AMOLED screen.
Skip it if…
- • You have a small wrist (under about 160 mm) — the 46 mm case we list is large (check whether a smaller size is sold).
Frequently asked questions
Which has better battery life, the Casio G-Shock GBD-H2000 or the Garmin Forerunner 265?
The Garmin Forerunner 265 has the longer rated battery life: about 13 days per charge against 12 days. These are manufacturer ratings; heavy GPS, always-on display and cellular use will cut both.
Which is cheaper, the Casio G-Shock GBD-H2000 or the Garmin Forerunner 265?
The Casio G-Shock GBD-H2000 has the lower list price: $399 against $449 in our database. List prices change often, so check Amazon for today's price.
Do the Casio G-Shock GBD-H2000 and Garmin Forerunner 265 work with iPhone and Android?
Yes, they have the same phone support: both iPhone and Android.
Which is better for swimming, the Casio G-Shock GBD-H2000 or the Garmin Forerunner 265?
Casio G-Shock GBD-H2000: 20ATM is suitable for swimming and surface water sports. It is not a dive rating unless the maker says so. Garmin Forerunner 265: 5ATM is suitable for showering and pool swimming, but not for high-speed water sports or diving.
Not sure either is right for you?
Nine questions about your phone, sport, wrist and budget, scored against all of our watches with the reasoning shown.
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