Side by side

Casio GAS-100vsCasio PRG-270

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Add a watch
GAS-100
CasioGAS-100
MSRP $180
See the full GAS-100
PRG-270
CasioPRG-270
MSRP $200
See the full PRG-270
Buy from Casio ↗
Buy used on eBay ↗
Buy from Casio ↗
Buy used on eBay ↗

At a glance

9 of 29 specs differ
Diameter
GAS-10052.5mm
PRG-27052.4mm
Power Reserve
GAS-100—
PRG-270—
Water Resistance
GAS-100200m
PRG-270100m
MSRP
GAS-100$180
PRG-270$200

Full specifications

Case

6 specs
Category
Sport
Field
Diameter
52.5mm
52.4mm
Thickness
16.7mm
15mm
Lug-to-Lug
55.1mm
54.6mm
Material
Resin / Stainless steel
Resin
Water Resistance
200m
100m

Crystal & Dial

1 specs
Dial Color
Silver
Black

Movement

1 specs
Type
Solar
Quartz

Pricing

1 specs
MSRP
$180
$200
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Citizen Promaster Professional Diver
Citizen
Promaster DiverPromaster

Promaster Professional Diver

9 watches · 24 variantsPromaster
44mm·Solar·200m WR
$296MSRP
—Used
Jorg Gray Watches JG2500
Jorg Gray Watchesmicro

JG2500

Ref. jg2500-22
52mm·Quartz·100m WR
—MSRP
—Used
Nite Watches HAWK HIGHLAND C2C
Nite Watchesmicro

HAWK HIGHLAND C2C

51mm·Quartz·300m WR
$375MSRP
—Used
Citizen Donald Duck
Citizen
CitizenDisney Collection

Donald Duck

9 watches · 9 variantsDisney Collection
42mm·Solar·100m WR
$225MSRP
—Used
BERNY BERNY-Men Automatic Compressor-style Diver Watch V3-AM339M
BERNYmicro

BERNY-Men Automatic Compressor-style Diver Watch V3-AM339M

3 variantsSeries
49mm·Quartz·198m WR
$140MSRP
—Used
Casio AQ-S820W
Casio
Casio

AQ-S820W

3 variantsCasio
50.1mm·Solar·100m WR
$65MSRP
—Used
BERNY BERNY-Men Automatic Compressor-style Diver Watch V3-AM339MS
BERNYmicro

BERNY-Men Automatic Compressor-style Diver Watch V3-AM339MS

3 variantsSeries
49mm·Quartz·198m WR
$155MSRP
—Used
AVI-8 Flyboy Tuskegee Airmen Meca-Quartz
AVI-8micro

Flyboy Tuskegee Airmen Meca-Quartz

9 watches · 33 variantsFlyboy
Quartz
$290MSRP
—Used
All alternatives to the GAS-100 →All alternatives to the PRG-270 →
Explore the full catalog

Follow this matchup

Get a note when Casio GAS-100 vs Casio PRG-270 gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Casio PRG-270vsJorg Gray Watches JG2500Casio PRG-270vsNite Watches HAWK HIGHLAND C2CCasio PRG-270vsJorg Gray Watches JG6900Bamford of London G-SHOCK X BAMFORD LONDON GM-5600-1vsCasio PRG-270Casio GAS-100vsJorg Gray Watches JG2500Casio GAS-100vsNite Watches Hawk
Edit this comparisonAdd another watchExplore more 51–54mm watches