Which is cheaper, the Grand Seiko SBGW306 or the Spinnaker Fleuss Mechanical Chronograph?

At MSRP the Spinnaker Fleuss Mechanical Chronograph is the cheaper of the two at $550, against $17,900 for the Grand Seiko SBGW306 — a $17,350 gap before any retailer discounting.

Which is bigger, the Grand Seiko SBGW306 or the Spinnaker Fleuss Mechanical Chronograph?

The Spinnaker Fleuss Mechanical Chronograph wears larger at 43mm versus 36.5mm for the Grand Seiko SBGW306 — a 6.5mm difference across the dial.

Which has a longer power reserve, the Grand Seiko SBGW306 or the Spinnaker Fleuss Mechanical Chronograph?

The Grand Seiko SBGW306 carries a 72-hour power reserve against 40 hours on the Spinnaker Fleuss Mechanical Chronograph.

What movement does the Grand Seiko SBGW306 run compared to the Spinnaker Fleuss Mechanical Chronograph?

The Grand Seiko SBGW306 runs a manual caliber (9S64), while the Spinnaker Fleuss Mechanical Chronograph runs a mechanical (Seagull ST1908).

Side by side

Grand Seiko SBGW306vsSpinnaker Fleuss Mechanical Chronograph

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

Grand Seiko SBGW306

sbgw306j

MSRP $17,900

Spinnaker Fleuss Mechanical Chronograph

fleuss-mechanical-chronograph-spongebob-squarepants-eyedial-limited-edition-googly-black-sp-5153-02

MSRP $550

At a glance

11 of 29 specs differ

Diameter

SBGW30636.5mm

Fleuss Mechanical Chronograph43mm

Power Reserve

SBGW30672h

Fleuss Mechanical Chronograph40h

Water Resistance

SBGW306100m

Fleuss Mechanical Chronograph100m

MSRP

SBGW306$17,900

Fleuss Mechanical Chronograph$550

Full specifications

Case

6 specs

Crystal & Dial

1 specs

AR Coating

Yes

Inner

Movement

3 specs

Caliber

9S64

Seagull ST1908

Type

Manual

Automatic

Power Reserve

72h

40h

Pricing

1 specs

MSRP

$17,900

$550

Follow this matchup

Get a note when Grand Seiko SBGW306 vs Spinnaker Fleuss Mechanical Chronograph gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring