Which is cheaper, the Casio GW-7900 or the Seiko Prospex Rotocall?

At MSRP the Casio GW-7900 is the cheaper of the two at $165, against $550 for the Seiko Prospex Rotocall — a $385 gap before any retailer discounting.

Which is bigger, the Casio GW-7900 or the Seiko Prospex Rotocall?

The Casio GW-7900 wears larger at 50mm versus 37mm for the Seiko Prospex Rotocall — a 13mm difference across the dial.

Which has better water resistance, the Casio GW-7900 or the Seiko Prospex Rotocall?

The Casio GW-7900 is rated to 200m versus 10m for the Seiko Prospex Rotocall.

Side by side

Casio GW-7900vsSeiko Prospex Rotocall

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

Add a watch

Casio GW-7900

GW-7900

MSRP $165

See the full GW-7900

Seiko Prospex Rotocall

MSRP $550

See the full Prospex Rotocall

At a glance

13 of 29 specs differ

Diameter

GW-790050mm

Prospex Rotocall37mm

Power Reserve

GW-7900—

Prospex Rotocall—

Water Resistance

GW-7900200m

Prospex Rotocall100m

MSRP

GW-7900$165

Prospex Rotocall$550

Full specifications

Case

7 specs

Diameter

50mm

37mm

Thickness

17.7mm

10.6mm

Lug-to-Lug

52.4mm

43.5mm

Lug Width

—

20mm

Material

Resin

Stainless Steel

Finish

—

Water Resistance

200m

100m

Crystal & Dial

3 specs

Crystal

Mineral

Hardlex

AR Coating

—

Dial Color

Black

—

Movement

2 specs

Caliber

—

A824

Power Reserve

—

Pricing

1 specs

MSRP

$165

$550

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.

Casio

Follow this matchup

Get a note when Casio GW-7900 vs Seiko Prospex Rotocall 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.

Rockwell Time Coliseum Fit (digital)vsSeiko Prospex Rotocall Jorg Gray Watches JG2500vsSeiko Prospex Rotocall Jorg Gray Watches JG9600vsSeiko Prospex Rotocall Smith & Bradley LockdownvsSeiko Prospex Rotocall Casio GW-7900vsVaer DS2 Meridian Quartz Vaer Tactical Field (DLC)vsCasio GW-7900

Edit this comparison Add another watch More sport comparisons Best Sport Watches Under $500

Casio GW-7900vsSeiko Prospex Rotocall

At a glance

Full specifications

More watches worth a look

AEQ-110W

DS2 Meridian Quartz

Promaster Diver Ecozilla

Navygraf Marine Nationale Quartz

T-Touch Connect Solar

HF1 Snelway

Steel Navigator SSNAV-D Quartz

Promaster Navihawk A-T

Follow this matchup

People also compared