Side by side

Casio GMD-B300vsUndone Vintage Killy Rally

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

Add a watch
GMD-B300
CasioGMD-B300
MSRP $135
See the full GMD-B300
Vintage Killy Rally
UndoneVintage Killy Rally
MSRP $285
See the full Vintage Killy Rally
Buy from Casio ↗
Buy used on eBay ↗
Buy from Undone ↗
Buy used on eBay ↗

At a glance

14 of 29 specs differ
Diameter
GMD-B30043.8mm
Vintage Killy Rally40mm
Power Reserve
GMD-B300—
Vintage Killy Rally—
Water Resistance
GMD-B300200m
Vintage Killy Rally30m
MSRP
GMD-B300$135
Vintage Killy Rally$285

Full specifications

Case

8 specs
Category
Sport
—
Diameter
43.8mm
40mm
Thickness
12mm
12.7mm
Lug-to-Lug
46.4mm
0mm
Lug Width
—
0mm
Material
Resin / Bio-based resin
Stainless Steel
Finish
—
—
Water Resistance
200m
30m

Crystal & Dial

3 specs
Crystal
Mineral
K1
AR Coating
No
—
Dial Color
Black
—

Movement

2 specs
Caliber
—
Seiko VK61
Power Reserve
—
0h

Pricing

1 specs
MSRP
$135
$285
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 Mickey Mouse
Citizen
CitizenDisney Collection

Mickey Mouse

9 watches · 10 variantsDisney Collection
43mm·Solar·100m WR
$237MSRP
—Used
Undone Vintage Killy Classic Alligator
Undonemicro

Vintage Killy Classic Alligator

40mm·Quartz
$285MSRP
—Used
Citizen Garrison
Citizen
Eco-Drive

Garrison

5 watches · 6 variantsGarrison
43mm·Solar·100m WR
$244MSRP
—Used
Undone Vintage Killy
Undonemicro
Vintage Killy Gold

Vintage Killy

2 variantsSeries
40mm·Quartz
$285MSRP
—Used
Smith & Bradley Atlantis Sport
Smith & Bradley

Atlantis Sport

3 variantsAtlantis Sport
44mm·Quartz·300m WR
$249MSRP
—Used
Smiths PRS-40 CHRONOGRAPH
Smithsmicro

PRS-40 CHRONOGRAPH

40.2mm·Quartz·100m WR
—MSRP
—Used
Smith & Bradley Draper Quartz
Smith & Bradley

Draper Quartz

3 variantsDraper Quartz
42mm·Quartz·200m WR
$149MSRP
—Used
Delhi Watch Company VAYU BISON
Delhi Watch Companymicro

VAYU BISON

38mm·Quartz·100m WR
$69MSRP
—Used
All alternatives to the GMD-B300 →All alternatives to the Vintage Killy Rally →
Explore the full catalog

Follow this matchup

Get a note when Casio GMD-B300 vs Undone Vintage Killy Rally 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.

Elliot Brown HOLTON: 101-001vsUndone Vintage Killy RallyRoskopf HurricanevsUndone Vintage Killy RallyJorg Gray Watches JG8400vsUndone Vintage Killy RallyElliot Brown HOLTON: Land Rover x ElliotvsUndone Vintage Killy RallyCasio GMD-B300vsUndone Vintage KillyCasio GMD-B300vsUndone Vintage Killy Sport
Edit this comparisonAdd another watchExplore more 39–45mm watches