Side by side

Monta OceankingvsYema Wristmaster Slim CMM.20

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

Oceanking
MontaOceanking
MSRP $2,550
Wristmaster Slim CMM.20
YemaWristmaster Slim CMM.20
MSRP $2,117

At a glance

9 of 29 specs differ
Diameter
Oceanking40mm
Wristmaster Slim CMM.2039mm
Power Reserve
Oceanking40h
Wristmaster Slim CMM.2040h
Water Resistance
Oceanking305m
Wristmaster Slim CMM.20100m
MSRP
Oceanking$2,550
Wristmaster Slim CMM.20$2,117

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
9mm
Lug Width
24mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
305m
100m

Crystal & Dial

1 specs
Dial Color
Blue
Black

Movement

1 specs
Caliber
Monta M-22
Yema CMM.20

Pricing

1 specs
MSRP
$2,550
$2,117

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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.

Yema Wristmaster Slim CMM.20

The Yema Wristmaster Slim CMM.20 is widely praised for its compelling integrated bracelet design and comfortable 39mm wearability. Reviewers highlight its impressive value, featuring an in-house CMM.20 micro-rotor movement with a 70-hour power reserve, adjusted to -3/+7 seconds per day, all within a slim 9mm case. Some note the domed sapphire crystal can produce glare and the dial text is quite small. On balance, reviewers rate the Yema Wristmaster Slim CMM.20 highly for its integrated design and value proposition with a micro-rotor movement.

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