Side by side

Monta OceankingvsGrand Seiko SLGA015

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

Oceanking
MontaOceanking
MSRP $2,550
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

12 of 29 specs differ
Diameter
Oceanking40mm
SLGA01543.8mm
Power Reserve
Oceanking40h
SLGA015120h
Water Resistance
Oceanking305m
SLGA015200m
MSRP
Oceanking$2,550
SLGA015$12,600

Full specifications

Case

6 specs
Diameter
40mm
43.8mm
Thickness
13.8mm
Lug-to-Lug
48mm
51.5mm
Lug Width
23mm
Material
Stainless Steel
Titanium
Water Resistance
305m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Blue
Black

Movement

3 specs
Caliber
Monta M-22
9RA5
Type
Automatic
Spring Drive
Power Reserve
40h
120h

Pricing

1 specs
MSRP
$2,550
$12,600

Follow this matchup

Get a note when Monta Oceanking vs Grand Seiko SLGA015 gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Monta Oceanking

Owners and reviewers widely praise the Monta Oceanking for its refined aesthetics, excellent fit and finish for its price point, and comfortable, supple bracelet with a micro-adjustment clasp. The watch features a legible dial with enlarged luminous markers and hands, a well-done glossy and deep bezel, and a svelte sub-41mm case with a shorter lug-to-lug. Some owners note minor gripes with bezel alignment and movement accuracy, while one reviewer found the tapering crown tricky to grip and the bezel had slight play. The Sellita SW300 movement provides a power reserve of either 42 or 56 hours, depending on the source, and the watch includes a date at six o'clock. Overall, owners and reviewers rate the Monta Oceanking highly for its comfortable wearability and tool-focused, sportier stance.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

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.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.