Side by side

Casio GA-100vsUndone Tachikoma

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

Add a watch
GA-100
CasioGA-100
MSRP $110
See the full GA-100
Tachikoma
UndoneTachikoma
MSRP $320
See the full Tachikoma
Buy from Casio ↗
Buy used on eBay ↗
Buy from Undone ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

14 of 29 specs differ
Diameter
GA-10051.2mm
Tachikoma41.8mm
Power Reserve
GA-100—
Tachikoma—
Water Resistance
GA-100200m
Tachikoma100m
MSRP
GA-100$110
Tachikoma$320

Full specifications

Case

8 specs
Category
Sport
—
Diameter
51.2mm
41.8mm
Thickness
16.9mm
12.7mm
Lug-to-Lug
55mm
0mm
Lug Width
—
0mm
Material
Resin
Stainless Steel
Finish
—
—
Water Resistance
200m
100m

Crystal & Dial

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

Movement

2 specs
Caliber
—
Seiko VK63
Power Reserve
—
0h

Pricing

1 specs
MSRP
$110
$320
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.

Jorg Gray Watches JG2500
Jorg Gray Watchesmicro

JG2500

Ref. jg2500-22
52mm·Quartz·100m WR
—MSRP
—Used
Filippo Loreti Watches NHRA 75 Red & Blue Chronograph
Filippo Loreti Watchesmicro

NHRA 75 Red & Blue Chronograph

4 variantsSeries
42mm·Mecaquartz·100m WR
$299MSRP
—Used
BERNY BERNY-Men Quartz Chronograph Field Watch-2845M
BERNYmicro

BERNY-Men Quartz Chronograph Field Watch-2845M

5 variantsSeries
51mm·Quartz·198m WR
$125MSRP
—Used
Delhi Watch Company DWC TRIPLE CROWN
Delhi Watch Companymicro

DWC TRIPLE CROWN

5 variantsSeries
39mm·Quartz·100m WR
$69MSRP
—Used
BERNY BERNY-Men Quartz Moonphase Watch-2190M
BERNYmicro

BERNY-Men Quartz Moonphase Watch-2190M

4 variantsSeries
50mm·Quartz·198m WR
$60MSRP
—Used
Duxot Accelero Chronograph
Duxotmicro

Accelero Chronograph

8 variantsAccelero Chronograph
40mm·Quartz·100m WR
$250MSRP
—Used
AVI-8 Bell X-1 Machbuster Chronograph
AVI-8micro

Bell X-1 Machbuster Chronograph

2 watches · 11 variantsBell X-1
Quartz
$300MSRP
—Used
Filippo Loreti Watches Two-Face Chronograph
Filippo Loreti Watchesmicro

Two-Face Chronograph

42mm·Mecaquartz·100m WR
$349MSRP
—Used
All alternatives to the GA-100 →All alternatives to the Tachikoma →
Explore the full catalog
DiscussionNot started
Adjacent matchups

People also compared

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

Jorg Gray Watches JG2500vsUndone TachikomaBERNY BERNY-Men Quartz Chronograph Field Watch-2845MvsUndone TachikomaJorg Gray Watches JG6700-11 Ben SpiesvsUndone TachikomaBERNY BERNY-Men Automatic Full Calendar Watch-AM7042MvsUndone TachikomaCasio GA-100vsDuxot Accelero ChronographCasio GA-100vsDuxot Accelero Chronograph Compax Skeleton Edition
Edit this comparisonAdd another watch