Side by side

Lorier Hydra SIIIvsUndone Ronin Automatic

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

Add a watch
Hydra SIII
LorierHydra SIII
MSRP $699
See the full Hydra SIII
Ronin Automatic
UndoneRonin Automatic
MSRP $380
See the full Ronin Automatic
Buy from Lorier ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

Buy from Undone ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

11 of 29 specs differ
Diameter
Hydra SIII39mm
Ronin Automatic40mm
Power Reserve
Hydra SIII—
Ronin Automatic—
Water Resistance
Hydra SIII200m
Ronin Automatic100m
MSRP
Hydra SIII$699
Ronin Automatic$380

Full specifications

Case

6 specs
Category
Diver
—
Diameter
39mm
40mm
Thickness
—
0mm
Lug-to-Lug
—
0mm
Lug Width
20mm
0mm
Water Resistance
200m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
—
Dial Color
Blue
—

Movement

2 specs
Caliber
—
Seiko NH35
Power Reserve
0h
—

Pricing

1 specs
MSRP
$699
$380
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.

Geckota Sea-Hunter Dive Watch
Geckotamicro

Sea-Hunter Dive Watch

6 variantsSea-Hunter
40mm·Automatic·200m WR
$349MSRP
—Used
MMI Watches Turret 300M - Model: TR4-DV (PITCH BLACK)
MMI Watchesmicro

Turret 300M - Model: TR4-DV (PITCH BLACK)

40mm·Automatic·300m WR
$425MSRP
—Used
Henry Archer Vesterhav
Henry Archermicro

Vesterhav

2 watches · 45 variantsVesterhav
40mm·Automatic·200m WR
$599MSRP
—Used
MMI Watches Turret 300M - Model: TR4-WL (PITCH BLACK) (NO DATE)
MMI Watchesmicro

Turret 300M - Model: TR4-WL (PITCH BLACK) (NO DATE)

40mm·Automatic·300m WR
$425MSRP
—Used
Henry Archer Tidevand
Henry Archermicro

Tidevand

20 variantsTidevand
40mm·Automatic·200m WR
$652MSRP
—Used
Vaer D5 Meridian Auto
Vaermicro
Meridian

D5 Meridian Auto

6 watches · 23 variantsMeridian
39mm·Automatic·200m WR
$679MSRP
—Used
Mr. Eatwell ScrewDiver — Charoite Stone Dial — Slowed Down, Turned Up
Mr. Eatwellmicro

ScrewDiver — Charoite Stone Dial — Slowed Down, Turned Up

40mm·Automatic·200m WR
$565MSRP
—Used
Zelos Swordfish 3
Zelosmicro

Swordfish 3

40/42mm
2 watches · 35 variantsSwordfish
40/42mm·Automatic·200m WR
$399MSRP
—Used
All alternatives to the Hydra SIII →All alternatives to the Ronin Automatic →
Explore the full catalog

Follow this matchup

Get a note when Lorier Hydra SIII vs Undone Ronin Automatic 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.

Geckota Sea-Hunter Dive WatchvsUndone Ronin AutomaticSpinnaker CroftvsUndone Ronin AutomaticHenry Archer TidevandvsUndone Ronin AutomaticUndone Ronin AutomaticvsVaer D5 Tropic AutoLorier Hydra SIIIvsUndone Texas Holdem pokerFilippo Loreti Watches Superman Diver AutomaticvsLorier Hydra SIII
Edit this comparisonAdd another watchExplore more 38–41mm watches