Which is cheaper, the Spinnaker Brutus Yellow or the Seiko Prospex Sea?

At MSRP the Spinnaker Brutus Yellow is the cheaper of the two at $395, against $595 for the Seiko Prospex Sea — a $200 gap before any retailer discounting.

Which is bigger, the Spinnaker Brutus Yellow or the Seiko Prospex Sea?

The Spinnaker Brutus Yellow wears larger at 43mm versus 41.7mm for the Seiko Prospex Sea — a 1.3mm difference across the dial.

Which has better water resistance, the Spinnaker Brutus Yellow or the Seiko Prospex Sea?

The Seiko Prospex Sea is rated to 200m versus 150m for the Spinnaker Brutus Yellow.

Which has a longer power reserve, the Spinnaker Brutus Yellow or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 41-hour power reserve against 40 hours on the Spinnaker Brutus Yellow.

What movement does the Spinnaker Brutus Yellow run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Spinnaker Brutus Yellow uses the SII NH35A and the Seiko Prospex Sea uses the 4R35.

Side by side

Spinnaker Brutus YellowvsSeiko Prospex Sea

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

Spinnaker Brutus Yellow

fleuss-automatic-popeye-bronemies-limited-edition-brutus-yellow-sp-5161-01

MSRP $395

Seiko Prospex Sea

srpl11

MSRP $595

At a glance

13 of 29 specs differ

Diameter

Brutus Yellow43mm

Prospex Sea41.7mm

Power Reserve

Brutus Yellow40h

Prospex Sea41h

Water Resistance

Brutus Yellow150m

Prospex Sea200m

MSRP

Brutus Yellow$395

Prospex Sea$595

Full specifications

Case

6 specs

Diameter

43mm

41.7mm

Thickness

13mm

12.3mm

Lug-to-Lug

51mm

49.5mm

Lug Width

22mm

20mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

150m

200m

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Dial Color

Brutus Yellow

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

SII NH35A

4R35

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$395

$595

Follow this matchup

Get a note when Spinnaker Brutus Yellow vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Spinnakermicro

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Spinnaker Hull California (Olive Oyl Red)vsSeiko Prospex Sea Zelos Dlc - Mosaic MopvsSeiko Prospex Sea Spinnaker Cahill AutomaticvsSeiko Prospex Sea Spinnaker Wreck AutomaticvsSeiko Prospex Sea Dryden PathfindervsSpinnaker Brutus Yellow Spinnaker Brutus YellowvsZelos Blacktip 41

Edit this comparison Add another watch More diver comparisons Best Diver Watches Under $500 Explore more 40–44mm watches

Spinnaker Brutus YellowvsSeiko Prospex Sea

At a glance

Full specifications

Follow this matchup

More watches worth a look

Hull California (Olive Oyl Red)

Pathfinder

Dlc - Mosaic Mop

Blacktip 41

Cahill Automatic

Skindiver II Professional

Phalanx

Arctic OSAR 41mm Automatic

People also compared