Side by side

Grand Seiko SBGP015vsYema Superman Slim CMM.20

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

SBGP015
Grand SeikoSBGP015
MSRP $3,800
Superman Slim CMM.20
YemaSuperman Slim CMM.20
MSRP $2,372

At a glance

10 of 29 specs differ
Diameter
SBGP01540mm
Superman Slim CMM.2039mm
Power Reserve
SBGP01540h
Superman Slim CMM.2040h
Water Resistance
SBGP015200m
Superman Slim CMM.20300m
MSRP
SBGP015$3,800
Superman Slim CMM.20$2,372

Full specifications

Case

5 specs
Diameter
40mm
39mm
Thickness
12.4mm
9.95mm
Lug-to-Lug
47.1mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner

Movement

2 specs
Caliber
9F85
Yema CMM.20
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$3,800
$2,372

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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.

Grand Seiko SBGP015

Owners widely praise the Grand Seiko SBGP015 for its stupendous, substantial, and classy versatility, with reviewers noting the dial print is exceptionally sharp, casting shadows under light. The Grand Seiko 9F85 quartz movement is lauded for its excellent timekeeping, with one owner purchasing it as a grab-and-go option. The watch is listed for £1900. Overall, owners rate the Grand Seiko SBGP015 highly for its sharp dial print and the accuracy of its 9F85 quartz movement.

Yema Superman Slim CMM.20

Owners and reviewers praise the Yema Superman Slim CMM.20 for its appealing retro design, balanced 39mm case, and in-house CMM.20 micro-rotor movement, with some finding the fish scale bracelet attractive. Concerns exist regarding its $2500/€2,490 MSRP, with some owners questioning its value and noting the potential for QC issues or a "jittery" seconds hand attributed to the new movement. The bracelet's articulation and stamped clasp draw criticism, though some owners report it improves with wear. Overall, owners and reviewers appreciate the Yema Superman Slim CMM.20's vintage styling and unique micro-rotor movement, but its value proposition and some finishing details are points of contention.

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