Side by side

Casio GBM-2100AvsOblvlo FM SL Day-Date Square

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

Add a watch
GBM-2100A
CasioGBM-2100A
MSRP $280
See the full GBM-2100A
FM SL Day-Date Square
OblvloFM SL Day-Date Square
MSRP $158
See the full FM SL Day-Date Square
Buy from Casio ↗
Buy used on eBay ↗
Buy from Oblvlo ↗
Buy used on eBay ↗

At a glance

16 of 29 specs differ
Diameter
GBM-2100A44.4mm
FM SL Day-Date Square39mm
Power Reserve
GBM-2100A—
FM SL Day-Date Square42h
Water Resistance
GBM-2100A200m
FM SL Day-Date Square50m
MSRP
GBM-2100A$280
FM SL Day-Date Square$158

Full specifications

Case

8 specs
Category
Sport
Dress
Diameter
44.4mm
39mm
Thickness
11.9mm
11mm
Lug-to-Lug
49.3mm
0mm
Lug Width
—
21mm
Material
Bio-based Resin / Stainless steel
Stainless Steel
Finish
—
—
Water Resistance
200m
50m

Crystal & Dial

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

Movement

4 specs
Caliber
—
Miyota 8215
Type
Quartz
Automatic
Power Reserve
—
42h
Jewels
0
21

Pricing

1 specs
MSRP
$280
$158
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 · 18 variantsPromaster
44mm·Solar·200m WR
$296MSRP
—Used
Duxot Alicante Rainbow Automatic
Duxotmicro

Alicante Rainbow Automatic

2 variantsAlicante Rainbow
38mm·Automatic
$229MSRP
—Used
Duxot Atlantica 40 Rainbow Automatic
Duxotmicro

Atlantica 40 Rainbow Automatic

10 variantsAtlantica 40
40mm·Automatic·100m WR
$269MSRP
—Used
Tissot Chrono XL Classic
Tissot

Chrono XL Classic

4 variantsChrono XL Classic
45mm·Quartz·100m WR
$495MSRP
—Used
Oblvlo RX Day-Date
Oblvlomicro
RX Series

RX Day-Date

40mm·Automatic
$336MSRP
—Used
Citizen Brycen
Citizen

Brycen

4 watches · 8 variantsBrycen
44.8mm·Solar·100m WR
$319MSRP
—Used
Furlan Marri Disco Onyx Diamonds
Furlan Marrimicro
Disco Volante

Disco Onyx Diamonds

2 watches · 4 variantsDisco Volante
38mm·Manual
$3,955MSRP
—Used
Omnis Eon
Omnismicro
Temporelle

Eon

12 variantsSeries
41.5mm·Automatic
$701MSRP
—Used
All alternatives to the GBM-2100A →All alternatives to the FM SL Day-Date Square →
Explore the full catalog

Follow this matchup

Get a note when Casio GBM-2100A vs Oblvlo FM SL Day-Date Square 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.

Oblvlo FM SL Day-Date SquarevsJorg Gray Watches JG8400Filippo Loreti Watches Oscura All Black 45mm LeathervsOblvlo FM SL Day-Date SquareBERNY BERNY-Men Automatic Skeleton Gold Watch-AM7018MvsOblvlo FM SL Day-Date SquareCWC (Cabot Watch Company) 1987 SBS Quartz Diver Re-Issue WatchvsOblvlo FM SL Day-Date SquareCasio GBM-2100AvsFurlan Marri Disco Onyx DiamondsCasio GBM-2100AvsNorthern Star Watch Sentinel
Edit this comparisonAdd another watchExplore more 38–46mm watches