Which is cheaper, the Grand Seiko SBGW306 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 $17,900 for the Grand Seiko SBGW306 — a $4,900 gap before any retailer discounting.

Which is bigger, the Grand Seiko SBGW306 or the Yema Superman Tourbillon CMM.31 Limited Edition?

The Yema Superman Tourbillon CMM.31 Limited Edition wears larger at 43mm versus 36.5mm for the Grand Seiko SBGW306 — a 6.5mm difference across the dial.

Which has better water resistance, the Grand Seiko SBGW306 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 SBGW306.

Which has a longer power reserve, the Grand Seiko SBGW306 or the Yema Superman Tourbillon CMM.31 Limited Edition?

The Grand Seiko SBGW306 carries a 72-hour power reserve against 40 hours on the Yema Superman Tourbillon CMM.31 Limited Edition.

What movement does the Grand Seiko SBGW306 run compared to the Yema Superman Tourbillon CMM.31 Limited Edition?

The Grand Seiko SBGW306 runs a manual caliber (9S64), while the Yema Superman Tourbillon CMM.31 Limited Edition runs a automatic (Yema CMM.31 Tourbillon).

Side by side

Grand Seiko SBGW306vsYema Superman Tourbillon CMM.31 Limited Edition

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

Grand Seiko SBGW306

sbgw306j

MSRP $17,900

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

13 of 29 specs differ

Diameter

SBGW30636.5mm

Superman Tourbillon CMM.31 Limited Edition43mm

Power Reserve

SBGW30672h

Superman Tourbillon CMM.31 Limited Edition40h

Water Resistance

SBGW306100m

Superman Tourbillon CMM.31 Limited Edition300m

MSRP

SBGW306$17,900

Superman Tourbillon CMM.31 Limited Edition$13,000

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Domed Sapphire

AR Coating

Yes

Inner

Dial Color

Black

Steel

Movement

3 specs

Caliber

9S64

Yema CMM.31 Tourbillon

Type

Manual

Automatic

Power Reserve

72h

40h

Pricing

1 specs

MSRP

$17,900

$13,000

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