Side by side

Naga Watches OperavsNoctua Watch Corp. Sentinel

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

Add a watch
Opera
Naga WatchesOpera
MSRP $917
Sentinel
Noctua Watch Corp.Sentinel
MSRP $429
Buy from Naga Watches ↗
Buy used on eBay ↗
Buy from Noctua Watch Corp. ↗
Buy used on eBay ↗

At a glance

8 of 29 specs differ
Diameter
Opera39mm
Sentinel42mm
Power Reserve
Opera—
Sentinel—
Water Resistance
Opera100m
Sentinel300m
MSRP
Opera$917
Sentinel$429

Full specifications

Case

5 specs
Diameter
39mm
42mm
Thickness
10mm
15mm
Lug-to-Lug
—
46mm
Lug Width
—
22mm
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
Lapislazuli
—

Movement

1 specs
Caliber
Miyota 9039
Seiko NH35A

Pricing

1 specs
MSRP
—
—
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.

Alexander James Watches A3 Artisan Series
Alexander James Watchesmicro

A3 Artisan Series

2 variantsRef. a3-artisan-series-maison-cacek-blue
38mm·Automatic·100m WR
—MSRP
—Used
Vertigo Watches Diver One V2
Vertigo Watchesmicro

Diver One V2

Ref. vertigo-diver-one-v2-black
42mm·Automatic·300m WR
$273MSRP
—Used
Mark Time Watches M 6
Mark Time Watchesmicro

M 6

6 variantsRef. m-6
39mm·Automatic·100m WR
$495MSRP
—Used
Decima Gatekeeper
Decimamicro

Gatekeeper

8 variantsRef. gatekeeper-white
38mm·Automatic
$599MSRP
—Used
Serket Watch Co Reef X Diver Black DLC
Serket Watch Comicro

Reef X Diver Black DLC

3 variantsRef.
43mm·Automatic·200m WR
—MSRP
—Used
Beaucroft Watches The Arc
Beaucroft Watchesmicro
Arc

The Arc

8 variantsRef. the-arc-burnt-orange
38mm·Automatic·100m WR
—MSRP
—Used
Ugly Watch Co 300mD
Ugly Watch Comicro

300mD

2 variantsRef. 300md-red
42mm·Automatic·300m WR
—MSRP
—Used
Dumoreau DM01
Dumoreaumicro

DM01

4 variantsRef. dm01-turquoise
38.6mm·Automatic·100m WR
—MSRP
—Used
All alternatives to the Opera →All alternatives to the Sentinel →
Explore the full catalog

Follow this matchup

Get a note when Naga Watches Opera vs Noctua Watch Corp. Sentinel 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.

Alexander James Watches A3 Artisan SeriesvsNoctua Watch Corp. SentinelMark Time Watches M 6vsNoctua Watch Corp. SentinelDecima GatekeepervsNoctua Watch Corp. SentinelBeaucroft Watches The ArcvsNoctua Watch Corp. SentinelNaga Watches OperavsVertigo Watches Diver One V2Naga Watches OperavsVertigo Watches Diver Two
Edit this comparisonAdd another watchExplore more 38–43mm watches