Which is bigger, the Ergon Watches Maelstrom or the Sartory Billard SB04-E?

The Ergon Watches Maelstrom wears larger at 40mm versus 39.5mm for the Sartory Billard SB04-E — a 0.5mm difference across the dial.

Which has better water resistance, the Ergon Watches Maelstrom or the Sartory Billard SB04-E?

The Ergon Watches Maelstrom is rated to 300m versus 100m for the Sartory Billard SB04-E.

What movement does the Ergon Watches Maelstrom run compared to the Sartory Billard SB04-E?

Both watches run automatic movements — the Ergon Watches Maelstrom uses the Sellita SW-200 and the Sartory Billard SB04-E uses the LJP G101ET.

Side by side

Ergon Watches MaelstromvsSartory Billard SB04-E

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

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Ergon Watches Maelstrom

maelstrom-300m-bronze-green

Sartory Billard SB04-E

MSRP $3,100

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Buy from Sartory Billard ↗

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At a glance

13 of 29 specs differ

Diameter

Maelstrom40mm

SB04-E39.5mm

Power Reserve

Maelstrom—

SB04-E68h

Water Resistance

Maelstrom300m

SB04-E100m

MSRP

Maelstrom—

SB04-E$3,100

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Yes

Dial Color

Gradient Green

Black

Lume

None

Super-LumiNova BGW9

Movement

3 specs

Caliber

Sellita SW-200

LJP G101ET

Power Reserve

—

68h

Jewels

Pricing

1 specs

MSRP

—

$3,100

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