Which is cheaper, the Boldr Marine or the Smiths Armstrong Siddeley?

At MSRP the Boldr Marine is the cheaper of the two at $439, against $980 for the Smiths Armstrong Siddeley — a $541 gap before any retailer discounting.

Which is bigger, the Boldr Marine or the Smiths Armstrong Siddeley?

The Smiths Armstrong Siddeley wears larger at 42mm versus 40mm for the Boldr Marine — a 2mm difference across the dial.

Which has better water resistance, the Boldr Marine or the Smiths Armstrong Siddeley?

The Boldr Marine is rated to 200m versus 100m for the Smiths Armstrong Siddeley.

What movement does the Boldr Marine run compared to the Smiths Armstrong Siddeley?

The Boldr Marine runs a automatic caliber (NH35A), while the Smiths Armstrong Siddeley runs a manual (Unitas 6498).

Side by side

Boldr MarinevsSmiths Armstrong Siddeley

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

Add a watch

Boldr Marine

marine-elewana

MSRP $439

Smiths Armstrong Siddeley

armstrong-siddeley-ltd-edition-prs-41

MSRP $980

At a glance

13 of 29 specs differ

Diameter

Marine40mm

Armstrong Siddeley42mm

Power Reserve

Marine40h

Armstrong Siddeley—

Water Resistance

Marine200m

Armstrong Siddeley100m

MSRP

Marine$439

Armstrong Siddeley$980

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Defender Elewana

Cream

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

NH35A

Unitas 6498

Type

Automatic

Manual

Power Reserve

40h

—

Pricing

1 specs

MSRP

$439

$980

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.

Borealis Watch Co.micro

Follow this matchup

Get a note when Boldr Marine vs Smiths Armstrong Siddeley gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

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

Borealis Watch Co. Caloura 300mvsSmiths Armstrong Siddeley Borealis Watch Co. NeptunovsSmiths Armstrong Siddeley Baltic Aquascaphe ClassicvsSmiths Armstrong Siddeley CWC RN81 Clearance Diver Automatic WatchvsSmiths Armstrong Siddeley Boldr MarinevsSmiths Armstrong Siddeley Richmond Spencer round smooth-bezel 3-hand, printed Roman numerals + small-seconds Boldr MarinevsSmiths Armstrong Siddeley Sewills Ferreira PRS-39 coin-edge/fluted-bezel onion-crown 3-hand, Roman numerals + small-seconds

Edit this comparison Add another watch Explore more 39–43mm watches

Boldr MarinevsSmiths Armstrong Siddeley

At a glance

Full specifications

More watches worth a look

Caloura 300m

Model 150

Neptuno

The Field Watch

Aquascaphe Classic

ARCTIC GMT

RN81 Clearance Diver Automatic Watch

C-03 PA CDG L2V2

Follow this matchup

People also compared