Which is cheaper, the Casio GM-B2100SD or the Oblvlo VM Tourbillon?

At MSRP the Casio GM-B2100SD is the cheaper of the two at $600, against $800 for the Oblvlo VM Tourbillon — a $200 gap before any retailer discounting.

Which is bigger, the Casio GM-B2100SD or the Oblvlo VM Tourbillon?

The Oblvlo VM Tourbillon wears larger at 45mm versus 44.4mm for the Casio GM-B2100SD — a 0.6mm difference across the dial.

Which has better water resistance, the Casio GM-B2100SD or the Oblvlo VM Tourbillon?

The Casio GM-B2100SD is rated to 200m versus 50m for the Oblvlo VM Tourbillon.

What movement does the Casio GM-B2100SD run compared to the Oblvlo VM Tourbillon?

The Casio GM-B2100SD runs a quartz caliber, while the Oblvlo VM Tourbillon runs a automatic (OBL.8024).

Side by side

Casio GM-B2100SDvsOblvlo VM Tourbillon

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

Add a watch

Casio GM-B2100SD

GM-B2100SD

MSRP $600

See the full GM-B2100SD

Oblvlo VM Tourbillon

MSRP $800

See the full VM Tourbillon

At a glance

17 of 29 specs differ

Diameter

GM-B2100SD44.4mm

VM Tourbillon45mm

Power Reserve

GM-B2100SD—

VM Tourbillon65h

Water Resistance

GM-B2100SD200m

VM Tourbillon50m

MSRP

GM-B2100SD$600

VM Tourbillon$800

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal

Mineral

Sapphire

AR Coating

—

Dial Color

Black

—

Lume

None

Super-LumiNova

Movement

5 specs

Caliber

—

OBL.8024

Type

Quartz

Automatic

Power Reserve

—

65h

Jewels

Complications

None

Tourbillon

Pricing

1 specs

MSRP

$600

$800

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

Follow this matchup

Get a note when Casio GM-B2100SD vs Oblvlo VM Tourbillon 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 CANFORD: 202-004vsOblvlo VM Tourbillon BERNY BERNY-Men Quartz Fashion Watch-2285VMvsOblvlo VM Tourbillon BERNY BERNY-Men Quartz Dress Watch-2825MvsOblvlo VM Tourbillon Elliot Brown DHU Special Edition CanfordvsOblvlo VM Tourbillon Casio GM-B2100SDvsGrandeur Watches Automatic Series G15016 Casio GM-B2100SDvsOmnis Eon

Edit this comparison Add another watch Explore more 43–46mm watches

Casio GM-B2100SDvsOblvlo VM Tourbillon

At a glance

Full specifications

More watches worth a look

Promaster Skyhawk A-T

Automatic Series G15016

Promaster Professional Diver

Merlin Elite

CHINESE ZODIAC YEAR OF THE HORSE

Seastar 1000 Chronograph

HM GT

PRC 200

Follow this matchup

People also compared