Which is cheaper, the Grand Seiko SBGA384 or the Yema Superman Tourbillon CMM.31 Limited Edition?

At MSRP the Yema Superman Tourbillon CMM.31 Limited Edition is the cheaper of the two at $13,000, against $29,500 for the Grand Seiko SBGA384 — a $16,500 gap before any retailer discounting.

Which is bigger, the Grand Seiko SBGA384 or the Yema Superman Tourbillon CMM.31 Limited Edition?

The Yema Superman Tourbillon CMM.31 Limited Edition wears larger at 43mm versus 40mm for the Grand Seiko SBGA384 — a 3mm difference across the dial.

Which has better water resistance, the Grand Seiko SBGA384 or the Yema Superman Tourbillon CMM.31 Limited Edition?

The Yema Superman Tourbillon CMM.31 Limited Edition is rated to 300m versus 100m for the Grand Seiko SBGA384.

Which has a longer power reserve, the Grand Seiko SBGA384 or the Yema Superman Tourbillon CMM.31 Limited Edition?

The Grand Seiko SBGA384 carries a 72-hour power reserve against 40 hours on the Yema Superman Tourbillon CMM.31 Limited Edition.

What movement does the Grand Seiko SBGA384 run compared to the Yema Superman Tourbillon CMM.31 Limited Edition?

The Grand Seiko SBGA384 runs a spring drive caliber (9R15), while the Yema Superman Tourbillon CMM.31 Limited Edition runs a automatic (Yema CMM.31 Tourbillon).

Side by side

Grand Seiko SBGA384vsYema Superman Tourbillon CMM.31 Limited Edition

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

Grand Seiko SBGA384

sbga384g

MSRP $29,500

Yema Superman Tourbillon CMM.31 Limited Edition

yema-superman-tourbillon-cmm-31-limited-edition-12-25-31-66-te-mt

MSRP $13,000

At a glance

14 of 29 specs differ

Diameter

SBGA38440mm

Superman Tourbillon CMM.31 Limited Edition43mm

Power Reserve

SBGA38472h

Superman Tourbillon CMM.31 Limited Edition40h

Water Resistance

SBGA384100m

Superman Tourbillon CMM.31 Limited Edition300m

MSRP

SBGA384$29,500

Superman Tourbillon CMM.31 Limited Edition$13,000

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Domed Sapphire

AR Coating

Yes

Inner

Dial Color

Black

Steel

Movement

3 specs

Caliber

9R15

Yema CMM.31 Tourbillon

Type

Spring Drive

Automatic

Power Reserve

72h

40h

Pricing

1 specs

MSRP

$29,500

$13,000

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