Side by side

Riley Watch Co Deco MoonvsSeiko Prospex Sea

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

Add a watch
Deco Moon
Riley Watch CoDeco Moon
MSRP $334
Prospex Sea
SeikoProspex Sea
MSRP $795
Buy from Riley Watch Co ↗
Buy used on eBay ↗
Buy from Seiko ↗
Buy used on eBay ↗

At a glance

11 of 29 specs differ
Diameter
Deco Moon36.5mm
Prospex Sea34mm
Power Reserve
Deco Moon40h
Prospex Sea40h
Water Resistance
Deco Moon50m
Prospex Sea200m
MSRP
Deco Moon$334
Prospex Sea$795

Full specifications

Case

6 specs
Category
—
Diver
Diameter
36.5mm
34mm
Thickness
9.6mm
8.7mm
Lug-to-Lug
46mm
40.8mm
Lug Width
22mm
16mm
Water Resistance
50m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands and index(es)

Movement

1 specs
Caliber
Ronda 708
6N01

Pricing

1 specs
MSRP
—
$795
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.

Riley Watch Co Studio Moonphase
Riley Watch Comicro
riley studio moonphase

Studio Moonphase

4 variantsRef. riley-studio-moonphase
34mm·Quartz
$254MSRP
—Used
Yema Navygraf Marine Nationale Femme
Yemamicro

Navygraf Marine Nationale Femme

9 watches · 12 variantsNavygraf
34mm·Quartz·100m WR
$399MSRP
—Used
Aigi Watches Glacier Rose 36mm Two-Tone Watch
Aigi Watches

Glacier Rose 36mm Two-Tone Watch

2 variantsRef. glacier-two-tone-watch
36mm·Quartz
$210MSRP
—Used
Vaer Tactical Field (DLC)
Vaermicro

Tactical Field (DLC)

5 watches · 7 variantsTactical Field
36mm·Solar·100m WR
$499MSRP
—Used
Aigi Watches NORTHERN LIGHTS 36MM
Aigi Watches

NORTHERN LIGHTS 36MM

2 variantsRef. northern-lights-36mm
36mm·Quartz
$167MSRP
—Used
Alexander James Watches A3 Omen Quartz
Alexander James Watches

A3 Omen Quartz

Ref. a3-omen-quartz-aventurine-pre-order
38mm·Quartz·100m WR
$325MSRP
—Used
CWC RANCD Quartz Divers Watch with Personalised Case Back
CWCmicro
RN Divers

RANCD Quartz Divers Watch with Personalised Case Back

Ref. ran-clearance-diver-rn-quartz-divers-watch-special-dial-personalised-case-back
40mm·Quartz·100m WR
$566MSRP
—Used
Tissot PR 100 Sport Chic
Tissot

PR 100 Sport Chic

36/38mm
3 variantsPR 100 Sport Chic
36/38mm·Quartz·100m WR
$625MSRP
—Used
All alternatives to the Deco Moon →All alternatives to the Prospex Sea →
Explore the full catalog

Follow this matchup

Get a note when Riley Watch Co Deco Moon vs Seiko Prospex Sea 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.

Riley Watch Co Studio MoonphasevsSeiko Prospex SeaAigi Watches Glacier Rose 36mm Two-Tone WatchvsSeiko Prospex SeaAigi Watches NORTHERN LIGHTS 36MMvsSeiko Prospex SeaAigi Watches Glacier 36MM Brown LeathervsSeiko Prospex SeaRiley Watch Co Deco MoonvsYema Navygraf Marine Nationale FemmeVaer Tactical Field (DLC)vsRiley Watch Co Deco Moon
Edit this comparisonAdd another watchExplore more 33–38mm watches