Oceanking

Premium $1,300+

The Monta Oceanking is a Swiss-made 300m diver, now in its third generation, built around the brand's proprietary M-22 caliber (based on Sellita SW300) with 56 hours of power reserve in a 40.5mm / 48mm lug-to-lug stainless steel case. It sells in periodic batch drops at $2,550 and has established itself as one of the stronger-value Swiss dive watches in the sub-$3,000 segment.

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40.5mm

Case

300m

Water res.

12mm

Thick

48mm

Lug-to-lug

Overview

Brand	Monta
Collection	Oceanking
Category	Dive
Released	2023
Price guide	Premium · $1,300+

Full specification

Specs

Case & dial

Diameter	40.5 mm
Lug-to-lug	48 mm
Thickness	12 mm
Lug width	20 mm
Water resistance	300 m
Crystal	sapphire
Case material	stainless steel
Bezel	unidirectional dive, 120-click, ceramic or aluminum insert
Case back	solid

Movement & furniture

Type	Automatic
Caliber	Monta M-22 →
Functions	Date
Power reserve	56 h
Jewels	25
Lume	Super-LumiNova BGW9
Strap / bracelet	stainless steel bracelet with 6-point micro-adjust clasp

On the wrist

The V3 Oceanking has a composed, tool-watch quality that doesn't announce itself. The flat sapphire reads cleaner than a domed crystal, giving the dial a modern directness that pairs well with the sword hands and stacked applied indices. The case proportions sit in a comfortable middle ground — not imposing on a 6.5-inch wrist, not lost on a larger one — and the bracelet, with genuine female end links and six micro-adjust positions, is noticeably better than what most watches in this category bother with. The black lacquer dial with red text accents gives the ceramic-bezel version a serious, utilitarian character; the blue dial with aluminum insert reads more relaxed and arguably more versatile day-to-day.

The BGW9 lume is consistent but not the brightest in its class, and the bezel's 120 clicks — driven by three ball bearings — are tactile and even, among the more satisfying in this price tier. The watch skips an exhibition caseback and formal third-party certification, and the micro-adjust clasp has attracted minor durability questions from long-term users who swim in salt water regularly. But for a buyer who wants a clearly considered Swiss diver with real manufacturing investment at a price that doesn't require a justification memo, the Oceanking V3 makes a persuasive case.

Bottom line

A tightly engineered Swiss diver that earns its price through visible finishing quality, a solid proprietary movement, and bracelet execution well above its tier — constrained mainly by a drop-model sales structure that keeps it sold out between releases.

Highlights

300m / 1,000ft water resistance
Monta M-22 (SW300-based), 56h power reserve
Patent-pending 120-click unidirectional bezel
40.5mm / 48mm lug-to-lug
Flat sapphire with 7-layer AR coating

Who it's for

Buyers with wrists in the 6.5–7.5-inch range who want a capable Swiss-made diver that wears neatly and transitions between sport and casual wear, value movement quality and bracelet execution over brand prestige, and are comfortable purchasing from a direct-to-consumer US-based brand that sells in periodic drops.

Who should skip it

Skip it if you need immediate off-the-shelf availability, want an exhibition caseback, require COSC or equivalent independent certification, or prefer a case under 40mm.

Before you buy

All variants sell out quickly in periodic drops — join Monta's newsletter for restock alerts before the next batch
Confirm bezel insert material before ordering: ceramic (black, orange, yellow, turquoise dials) vs. aluminum (blue dial) affects aesthetics and scratch resistance
Case diameter listed as 40.5mm officially but independently measured at ~40.7mm on some units — minor but worth noting for close comparisons
Micro-adjust clasp has received occasional long-term durability concerns from regular saltwater users — inspect periodically if diving seriously

FAQ

Is the Oceanking automatic or quartz?

It runs a automatic movement.

What movement does the Oceanking use?

The Monta M-22 (Monta).

Does the Oceanking have a date?

Yes.

How water resistant is the Oceanking?

It is rated to 300 m.

How big does the Oceanking wear?

40.5 mm wide with a 48 mm lug-to-lug.

How does the V3 differ from the earlier V2 Oceanking?

The V3 adds female end links for better wrist conformity, switches to a flat crystal, removes the half-indices and downsizes the logo for a cleaner dial, upgrades the M-22 to 56 hours of power reserve (up from ~42h), and refines the bezel to 120 clicks with a revised three-ball-bearing assembly.

Is the M-22 a fully proprietary movement or a modified off-the-shelf caliber?

The M-22 is a Sellita SW300-1 built to Monta's specifications — custom rotor, rhodium plating, and a reconfigured barrel for extended power reserve. It benefits from Sellita's established parts ecosystem and broad service network.

How does the Oceanking compare to similarly priced Swiss divers?

At $2,550 it competes against watches like the Oris Aquis and Christopher Ward C60, offering comparable specifications with arguably stronger bracelet execution; the main trade-off is the drop-model availability versus buying those brands any day from stock.