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Browse/Alternatives/Casio GAS-100
Casio GAS-100
Finding alternatives to

Alternatives to the Casio GAS-100

Ref. GAS-100

40 watches that match on case size, movement family, and price band. Sorted by how close the match is.

Case
52.5mm
Movement
Solar
Category
Sport
MSRP
$180
The short answer

The closest alternative to the Casio GAS-100 is the Casio PRG-601 ($330) — looks nearly identical and Same size. If price is the constraint, the Casio AQ-S820W at $65 (vs $180 for the GAS-100) covers most of the same brief. From the independents, the Jorg Gray Watches JG2500 is the standout microbrand take — looks nearly identical and Same size. Stepping up, the Citizen Promaster Aqualand 200M Depth Meter ($769) is where the same idea goes with a bigger budget.

ColourwayPick a colourway to match a specific dial
40 matches

Microbrand picks· 12

Independent makers covering the same brief — usually with something the mainstream brands don't.

Jorg Gray Watches JG2500
Jorg Gray Watchesmicro

JG2500

 
52mm·Quartz·100m WR
$595MSRP
vsCompare with the Casio GAS-100
Rockwell Time Coliseum Fit (digital)
Rockwell Timemicro

Coliseum Fit (digital)

74 variants
49mm·Quartz·100m WR
$130MSRP
vsCompare with the Casio GAS-100
Rockwell Time Coliseum (Digital)
Rockwell Timemicro

Coliseum (Digital)

7 variants
49mm·Quartz·100m WR
$109MSRP
vsCompare with the Casio GAS-100
Elliot Brown BEACHMASTER
Elliot Brownmicro

BEACHMASTER

4 variants
40mm·Quartz·300m WR
$855MSRP
vsCompare with the Casio GAS-100
Lum-Tec B73
Lum-Tecmicro
Combat BCombat

B73

 
44mm·Quartz·200m WR
$463MSRP
vsCompare with the Casio GAS-100
Nite Watches HAWK HIGHLAND C2C
Nite Watchesmicro

HAWK HIGHLAND C2C

 
51mm·Quartz·300m WR
$375MSRP
vsCompare with the Casio GAS-100
Vaer DS4 Topo Designs x Worn & Wound Solar Hiker
Vaermicro
DS4 Special Editions

DS4 Topo Designs x Worn & Wound Solar Hiker

2 variants · DS4 Special Editions
38mm·Solar·200m WR
$349MSRP
vsCompare with the Casio GAS-100
Rockwell Time 50mm Murdered Dial
Rockwell Timemicro
50mm Murdered Dial Edition

50mm Murdered Dial

3 variants
50mm·Quartz
$2,500MSRP
vsCompare with the Casio GAS-100
Jorg Gray Watches JG8700
Jorg Gray Watchesmicro

JG8700

 
47mm·Quartz·100m WR
$395MSRP
vsCompare with the Casio GAS-100
Jorg Gray Watches JG6900
Jorg Gray Watchesmicro

JG6900

6 variants
47mm·Quartz·100m WR
$425MSRP
vsCompare with the Casio GAS-100
Smith & Bradley Lockdown
Smith & Bradleymicro

Lockdown

3 variants
48mm·Quartz
$40MSRP
vsCompare with the Casio GAS-100
Nuncier Origen Current 40.5mm
Nunciermicro

Origen Current 40.5mm

 
40.5mm·Quartz·100m WR
$385MSRP
vsCompare with the Casio GAS-100

Mainstream picks· 12

Established brands covering the same brief at a comparable price — same case size, similar movement family. Often the deciding click for a new buyer.

Casio PRG-601
Casio
Pro Trek

PRG-601

 
51.5mm·Quartz·100m WR
$330MSRP
vsCompare with the Casio GAS-100
Casio G-SHOCK G-STEEL GST-B500
Casio

G-SHOCK G-STEEL GST-B500

 
48.9mm·Solar·200m WR
$314MSRP
vsCompare with the Casio GAS-100
Citizen Promaster Professional Diver
Citizen
Promaster DiverPromaster

Promaster Professional Diver

Ref. BN0191
45mm·Solar·200m WR
$356MSRP
vsCompare with the Casio GAS-100
Casio PRG-270
Casio
Pro Trek

PRG-270

 
52.4mm·Quartz·100m WR
$200MSRP
vsCompare with the Casio GAS-100
Citizen Garrison
Citizen
Eco-Drive

Garrison

Ref. BM8180
37mm·Solar·100m WR
$221MSRP
vsCompare with the Casio GAS-100
Citizen Promaster Professional Diver
Citizen
Promaster DiverPromaster

Promaster Professional Diver

4 variants · Promaster
44mm·Solar·200m WR
$296MSRP
vsCompare with the Casio GAS-100
Timex Essex Avenue 44mm Stainless Steel Bracelet Watch - TW2Y28800
Timex

Essex Avenue 44mm Stainless Steel Bracelet Watch - TW2Y28800

 
44mm·Quartz·200m WR
$102MSRP
vsCompare with the Casio GAS-100
Timex Q Timex Continental Chronograph 36mm Stainless Steel Bracelet Watch
Timex

Q Timex Continental Chronograph 36mm Stainless Steel Bracelet Watch

3 variants
36mm·Quartz·200m WR
$259MSRP
vsCompare with the Casio GAS-100
Timex Deepwater Reef 200 41mm Stainless Steel Bracelet Watch
Timex

Deepwater Reef 200 41mm Stainless Steel Bracelet Watch

 
41mm·Quartz·200m WR
$269MSRP
vsCompare with the Casio GAS-100
Mondaine Travel Mini Alarm Clock
Mondaine

Travel Mini Alarm Clock

 
50mm·Quartz
$305MSRP
vsCompare with the Casio GAS-100
Bulova Brown Dial Stainless Steel Bracelet Sport 44B136
Bulova
Sport

Brown Dial Stainless Steel Bracelet Sport 44B136

 
40mm·Quartz·100m WR
$325MSRP
vsCompare with the Casio GAS-100
Orient Bambino Solar Quartz
Orient

Bambino Solar Quartz

4 variants · Bambino
38.4mm·Solar
$265MSRP
vsCompare with the Casio GAS-100

Cheaper alternatives· 4

If the price is the only thing keeping you off this watch, these get you most of the way there for less.

Casio AQ-S820W
Casio

AQ-S820W

3 variants
50.1mm·Solar·100m WR
$65MSRP
vsCompare with the Casio GAS-100
Timex Expedition Field Chronograph 43mm Resin Strap Watch
Timex

Expedition Field Chronograph 43mm Resin Strap Watch

 
43mm·Quartz·200m WR
$75MSRP
vsCompare with the Casio GAS-100
Timex Expedition Chrono-Alarm-Timer 41mm Fabric Strap Watch
Timex

Expedition Chrono-Alarm-Timer 41mm Fabric Strap Watch

 
41mm·Quartz·200m WR
$89MSRP
vsCompare with the Casio GAS-100
Timex Diver Inspired 42mm Stainless Steel Bracelet Watch
Timex

Diver Inspired 42mm Stainless Steel Bracelet Watch

 
42mm·Quartz·200m WR
$82MSRP
vsCompare with the Casio GAS-100

Pricier alternatives· 12

Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.

Citizen Promaster Aqualand 200M Depth Meter
Citizen
Promaster DiverPromaster

Promaster Aqualand 200M Depth Meter

Ref. BN2029
53mm·Solar·200m WR
$769MSRP
vsCompare with the Casio GAS-100
Citizen Promaster Geo Trekker
Citizen

Promaster Geo Trekker

Ref. BN7020
53mm·Solar·1000m WR
—MSRP
vsCompare with the Casio GAS-100
Citizen Promaster Skyhawk A-T
Citizen

Promaster Skyhawk A-T

3 variants · Promaster
45mm·Quartz·200m WR
$596MSRP
vsCompare with the Casio GAS-100
Tissot T-Touch Connect Solar Jungfraubahn
Tissot

T-Touch Connect Solar Jungfraubahn

 
47.5mm·Quartz·100m WR
$1,250MSRP
vsCompare with the Casio GAS-100
Bulova Icon Precisionist Men's Grey Black Dial Chronograph Watch
Bulova

Icon Precisionist Men's Grey Black Dial Chronograph Watch

 
46.5mm·Quartz·300m WR
$1,095MSRP
vsCompare with the Casio GAS-100
Tissot T-Touch Connect Solar
Tissot

T-Touch Connect Solar

 
47.5mm·Quartz·100m WR
$1,350MSRP
vsCompare with the Casio GAS-100
Hamilton Ventura Edge Dune Limited Edition
Hamilton

Ventura Edge Dune Limited Edition

 
51mm·Quartz·100m WR
$2,725MSRP
vsCompare with the Casio GAS-100
Hamilton Ventura XXL Bright Dune Limited Edition
Hamilton

Ventura XXL Bright Dune Limited Edition

 
52mm·Quartz
$1,895MSRP
vsCompare with the Casio GAS-100
Tissot Seastar 1000
Tissot

Seastar 1000

11 variants
36/38/40/45.5mm·Quartz·300m WR
$515MSRP
vsCompare with the Casio GAS-100
Timex Waterbury America 250 Table Clock 49mm Stainless Steel
Timex

Waterbury America 250 Table Clock 49mm Stainless Steel

 
49mm·Quartz·200m WR
$399MSRP
vsCompare with the Casio GAS-100
Victorinox Concept One Solar
Victorinox

Concept One Solar

3 variants · Ref. 242052
39mm·Solar·100m WR
$900MSRP
vsCompare with the Casio GAS-100
Victorinox Dive Pro Quartz
Victorinox

Dive Pro Quartz

2 variants · Ref. 241990
43mm·Quartz·300m WR
$800MSRP
vsCompare with the Casio GAS-100
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