G-Shock & Pro Trek / The rankings
The best Casio Pro Trek: two hiking watches that never charge, and the G-Shocks that share their sensors
Pro Trek is Casio's hiking line: the same Tough Solar and triple sensor as a Rangeman in a lighter case, with 100 m instead of 200. Ranked from Casio's guides, with the Mudman and Rangeman included for the hiker who gets wet.
By Mike M.Updated Spec-sheet researched, not worn by us
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Quick picks
The rankings at a glance
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 |  Casio Pro Trek PRW-61 Tough Solar, radio time, triple sensor, double LED, 62 g, 14.7 mm, 100 m. About six months in the dark per Casio. | Best Pro Trek overallSolar, no charger | 8.1 /10 | Check price · Amazon |
| 2 | Casio Pro Trek PRG-340 Tough Solar, Triple Sensor v3, 54 g, 100 m; no radio time. 7 months used, 27 in power save. | Best budget Pro TrekSolar, no charger | 8.0 /10 | Check price · Amazon |
| 3 | G-Shock Rangeman GW-9400 Same sensor set plus sunrise/sunset, Multi-Band 6, mud-resistant; 93 g. | The G-Shock alternative, 200 mSolar, no charger | 8.7 /10 | Check price · Amazon |
| 4 | G-Shock Mudman GW-9500 Casio put the Pro Trek-style duplex LCD on this Mudman; 200 m, mud-resistant, 81 g. | The G-Shock with a Pro Trek displaySolar, no charger | 8.2 /10 | Check price · Amazon |
#ad · Prices are set by Amazon and change often, so we don't print them. Scores are ours, built from the makers' manuals, battery tables and spec pages, not field tests. Photos are illustrative stock. Tap a row for the full write-up.
What a Pro Trek is
Casio's outdoor line for people who hike more than they fight. The Pro Trek and the Master of G G-Shocks share the triple sensor, the Tough Solar cell and, on the PRW models, the same radio time calibration (Casio's PRW-61 guide lists JJY, WWVB, MSF, DCF77 and BPC). The Pro Trek drops the mud-resistant button seals and the 200 m rating (100 m on both models here) and the G-Shock bulk; the result is a triple-sensor watch at 54 to 62 g instead of 81 to 106. The full argument is on Pro Trek vs G-Shock.
PRW-61 vs PRG-340
The PRW-61 sets its own time from a radio signal and has a double LED (dial light plus LCD backlight); the PRG-340 does neither and is 8 g lighter and cheaper. Casio's guides give the PRW-61 about six months of dark running under its usage assumptions; G-Central's report on the PRG-340 gives it 7 months in use and 27 in power-save mode. Both are Triple Sensor Version 3, both are 100 m, both use Casio's biomass plastics. If you own a phone, the radio time is a convenience; if you spend weeks off grid, it is a feature. The PRW-61 review has the full guide figures.
When to buy the G-Shock instead
When the watch gets dunked or buried. The Rangeman GW-9400 and Mudman GW-9500 carry the same sensors with 200 m and mud-sealed buttons, plus sunrise/sunset in the guide, for 20 to 30 extra grams. The Mudman is the interesting one: Casio gave it the Pro Trek-style duplex LCD, so it reads like a Pro Trek and seals like a G-Shock. For most hikers the Pro Trek is enough; for anglers, hunters and anyone crossing rivers, it is not.
Battery, by Casio's guides
| Watch | Power | Casio's stated dark-running | Radio time | Weight | Water |
|---|---|---|---|---|---|
| Pro Trek PRW-61 | Tough Solar | About 6 months | Yes (5 signals) | 62 g | 100 m |
| Pro Trek PRG-340 | Tough Solar | 7 months; 27 in power save | No | 54 g | 100 m |
| Rangeman GW-9400 | Tough Solar | About 8 months | Multi-Band 6 | 93 g | 200 m, mud |
| Mudman GW-9500 | Tough Solar | About 6 months | Multi-Band 6 | 81 g | 200 m, mud |
The mistake buyers make
Expecting GPS. No Pro Trek here records a track; they are ABC watches. A hiker who wants a track buys a Garmin Instinct; the honest comparison is best hiking watch.
The decade pick
In detail
The picks, in full
Rank 1
Stock photoBest Pro Trek overall
Casio Pro Trek PRW-61
Tough Solar, radio time, triple sensor, double LED, 62 g, 14.7 mm, 100 m. About six months in the dark per Casio.
EvidenceResearched · not worn by us
| Power class | Solar, no charger. A solar cell that recharges from any light and never meets a charger. The rechargeable cell is a watchmaker-replaceable part. |
|---|---|
| Battery (cell) | Approximately 6 months with no light (Casio's stated usage conditions) |
| Power | Solar panel and one rechargeable battery |
| Bezel & case | Biomass plastics case |
| Water rating | 100 m |
| Sensors | Direction, pressure/altitude and temperature sensors; radio time calibration (JJY, WWVB, MSF, DCF77, BPC); double LED light |
| Weight | 62 g |
| Size | 51.0 × 47.4 × 14.7 mm |
| Operating temp | Low-temperature resistance to -10°C (14°F) |
How the 8.1 score breaks down
- Battery & power independence (25%)
- 9
- Durability of materials (25%)
- 6
- Serviceability & lifespan (20%)
- 9
- Field usability (15%)
- 8
- Value per decade (10%)
- 9
- Mission fit (5%)
- 8
What the spec sheet supports
- Solar, atomic and triple sensor at 62 g and 14.7 mm.
- Cleaner dial and a proper altimeter graph for hikers.
Where it falls short
- 100 m and no mud-resistant buttons; it is a hiking watch, not a Mudman.
- Mineral glass.
Skip this if…
…your watch gets buried in mud or dunked regularly; the G-Shock Mudman is the sealed version of this idea.
#ad · Price set by Amazon · Disclosure for the link to Casio Pro Trek PRW-61
Rank 2
Stock photoBest budget Pro Trek
Casio Pro Trek PRG-340
Tough Solar, Triple Sensor v3, 54 g, 100 m; no radio time. 7 months used, 27 in power save.
EvidenceResearched · not worn by us
| Power class | Solar, no charger. A solar cell that recharges from any light and never meets a charger. The rechargeable cell is a watchmaker-replaceable part. |
|---|---|
| Battery (cell) | Up to 7 months while used, up to 27 months in power save, with no light |
| Power | Tough Solar |
| Bezel & case | Biomass plastics |
| Water rating | 100 meters |
| Sensors | Triple Sensor Version 3: pressure (altimeter/barometer), compass, thermometer |
| Weight | 54 g (urethane band) |
| Size | 54.7 × 51.7 × 15.1 mm |
How the 8.0 score breaks down
- Battery & power independence (25%)
- 9
- Durability of materials (25%)
- 6
- Serviceability & lifespan (20%)
- 9
- Field usability (15%)
- 7
- Value per decade (10%)
- 10
- Mission fit (5%)
- 7
What the spec sheet supports
- Twenty-seven months in power-save mode is the longest stated figure of any Casio here.
- Lightest triple-sensor watch on the site at 54 g.
Where it falls short
- No Multi-Band 6; you set the time yourself.
- 100 m, mineral glass, no mud resistance.
Skip this if…
…you want the time to set itself; the PRW-61 adds radio calibration for the difference.
#ad · Price set by Amazon · Disclosure for the link to Casio Pro Trek PRG-340
Rank 3
Stock photoThe G-Shock alternative, 200 m
G-Shock Rangeman GW-9400
Same sensor set plus sunrise/sunset, Multi-Band 6, mud-resistant; 93 g.
EvidenceResearched · not worn by us
| Power class | Solar, no charger. A solar cell that recharges from any light and never meets a charger. The rechargeable cell is a watchmaker-replaceable part. |
|---|---|
| Battery (cell) | Approximately 8 months from full charge to Level 4 with no light (Casio's stated usage conditions) |
| Power | Solar panel and one rechargeable battery (Tough Solar) |
| Glass | Mineral crystal |
| Water rating | 200 meters |
| Sensors | Digital compass, barometer, altimeter, thermometer; sunrise/sunset; Multi-Band 6 time calibration (WWVB, DCF77, MSF, JJY, BPC) |
| Weight | 93 g |
| Size | 55.2 × 53.5 × 18.2 mm |
| Operating temp | Low-temperature resistance -10°C (14°F) |
How the 8.7 score breaks down
- Battery & power independence (25%)
- 10
- Durability of materials (25%)
- 7
- Serviceability & lifespan (20%)
- 10
- Field usability (15%)
- 7
- Value per decade (10%)
- 10
- Mission fit (5%)
- 8
What the spec sheet supports
- Solar and atomic: it sets itself from a radio signal and never sees a cable.
- A module that has been in production for over a decade; parts, straps and bezels are everywhere.
- Sunrise/sunset on the watch, the one hunting feature the Garmin Instinct does without a phone.
Where it falls short
- Mineral crystal, not sapphire; the Rangeman lives behind a raised bezel for a reason.
- No GPS, no maps, no heart rate. It tells you where north is, not where you are.
- Big and thick at 18.2 mm.
Skip this if…
…you want a track of where you walked; an ABC watch measures the world, it does not map it.
#ad · Price set by Amazon · Disclosure for the link to G-Shock Rangeman GW-9400
Rank 4
Stock photoThe G-Shock with a Pro Trek display
G-Shock Mudman GW-9500
Casio put the Pro Trek-style duplex LCD on this Mudman; 200 m, mud-resistant, 81 g.
EvidenceResearched · not worn by us
| Power class | Solar, no charger. A solar cell that recharges from any light and never meets a charger. The rechargeable cell is a watchmaker-replaceable part. |
|---|---|
| Battery (cell) | Approximately 6 months with no light (Casio's stated usage conditions) |
| Power | Solar panel and one rechargeable battery |
| Glass | Mineral |
| Bezel & case | Carbon, resin and bio-based resin |
| Water rating | 200 meters; shock resistant; mud resistant |
| Sensors | Digital compass, altimeter, barometer, thermometer; sunrise/sunset times |
| Weight | 81 g |
| Size | 56.7 × 52.7 × 14.8 mm |
How the 8.2 score breaks down
- Battery & power independence (25%)
- 9
- Durability of materials (25%)
- 7
- Serviceability & lifespan (20%)
- 9
- Field usability (15%)
- 7
- Value per decade (10%)
- 9
- Mission fit (5%)
- 9
What the spec sheet supports
- 3.4 mm thinner and 12 g lighter than the Rangeman GW-9400 by the published figures.
- Mud-resistant buttons and a carbon-reinforced case.
- Sunrise/sunset and a barometer graph for reading weather in a stand.
Where it falls short
- Six months of stated dark-running versus the Rangeman's eight.
- Mineral crystal.
Skip this if…
…you want the longest-proven G-Shock module; the Rangeman has a decade more history behind it.
#ad · Price set by Amazon · Disclosure for the link to G-Shock Mudman GW-9500
How we scored this
Watches we claim to have worn or tested: 0
Plenty of sites say they took every watch up a mountain. We didn't, and we say so. What we do instead: read the maker's own battery table mode by mode, check what the lens and case are actually made of, note the water rating and whether a MIL-STD-810 claim exists, ask how long the maker keeps updating the line, and score every pick on a public rubric weighted for a decade of ownership. Every figure links to where it came from.
Scores are editorial judgments from that documented research, not test results. Commissions never set a score or decide a pick. The rubric and its weights are published.
Questions
Frequently asked
Which Casio Pro Trek is best?
The PRW-61 for solar, radio time, triple sensor and 62 g; the PRG-340 if radio time does not matter and 54 g and a lower price do.
Is Pro Trek better than G-Shock for hiking?
Lighter, yes: 62 g vs 93 g for the Rangeman with the same sensors and solar. Tougher, no: 100 m without mud seals vs 200 m with them.
Does the Pro Trek have GPS?
Not the PRW-61 or PRG-340; they are altimeter-barometer-compass watches. See GPS vs ABC.
Keep reading
Related on Bezel & Bearing
Receipts
Sources
- Casio — Operation Guide, module 5673 (Pro Trek PRW-61), Specifications (checked 2026-09-20)
- New Atlas — Casio Pro Trek PRW-61 announcement (size, weight, water rating, battery) (checked 2026-09-20)
- G-Central — Pro Trek PRG-340 announcement (size, weight, water rating, battery) (checked 2026-09-20)
- Casio — Operation Guide, module 3410 (GW-9400 Rangeman), Specifications (checked 2026-09-20)
- Pilot Mall — Casio G-Shock Rangeman GW9400-1 listing (case size, weight, water rating) (checked 2026-09-20)
- Casio — Operation Guide, module 3553 (GW-9500 Mudman), Specifications (checked 2026-09-20)
- G-Central — G-Shock GW-9500 Mudman spec sheet (checked 2026-09-20)
We don't own or wear-test these watches and we don't pretend to. Battery, glass, case and water figures come from the maker's own owner's manuals, spec pages and press releases (linked on every product), and where a figure isn't published we say so. Prices are set by Amazon and change often, so we don't print them. Read the full method.