Which is cheaper, the Smiths Armstrong Siddeley or the Straton Syncro MKII Mechanical Chrono?

At MSRP the Straton Syncro MKII Mechanical Chrono is the cheaper of the two at $599, against $980 for the Smiths Armstrong Siddeley — a $381 gap before any retailer discounting.

Which is bigger, the Smiths Armstrong Siddeley or the Straton Syncro MKII Mechanical Chrono?

The Smiths Armstrong Siddeley wears larger at 42mm versus 40mm for the Straton Syncro MKII Mechanical Chrono — a 2mm difference across the dial.

What movement does the Smiths Armstrong Siddeley run compared to the Straton Syncro MKII Mechanical Chrono?

Both watches run manual movements — the Smiths Armstrong Siddeley uses the Unitas 6498 and the Straton Syncro MKII Mechanical Chrono uses the Seagull ST19.

Side by side

Smiths Armstrong SiddeleyvsStraton Straton Syncro MKII Mechanical Chrono

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

Add a watch

Smiths Armstrong Siddeley

armstrong-siddeley-ltd-edition-prs-41

MSRP $980

Straton Straton Syncro MKII Mechanical Chrono

straton-syncro-mkii-mechanical-chrono

MSRP $599

At a glance

17 of 29 specs differ

Diameter

Armstrong Siddeley42mm

Straton Syncro MKII Mechanical Chrono40mm

Power Reserve

Armstrong Siddeley—

Straton Syncro MKII Mechanical Chrono—

Water Resistance

Armstrong Siddeley100m

Straton Syncro MKII Mechanical Chrono100m

MSRP

Armstrong Siddeley$980

Straton Syncro MKII Mechanical Chrono$599

Full specifications

Case

8 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Domed

AR Coating

Inner

Underside

Dial Color

Cream

—

Indices

Applied

—

Movement

4 specs

Caliber

Unitas 6498

Seagull ST19

Beat Rate

28,800 vph

0 vph

Power Reserve

—

Jewels

Pricing

1 specs

MSRP

$980

$599

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.

96Zero Watches

Field Watch

Follow this matchup

Get a note when Smiths Armstrong Siddeley vs Straton Syncro MKII Mechanical Chrono 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.

Smiths Armstrong Siddeley Sewills Ferreira PRS-39 coin-edge/fluted-bezel onion-crown 3-hand, Roman numerals + small-secondsvsStraton Syncro MKII Mechanical Chrono Smiths Armstrong Siddeley Richmond Spencer round smooth-bezel 3-hand, printed Roman numerals + small-secondsvsStraton Syncro MKII Mechanical Chrono 96Zero Watches The Field WatchvsStraton Syncro MKII Mechanical Chrono Aigi Watches ARCTIC GMTvsStraton Syncro MKII Mechanical Chrono Hemel HFC Mechanical ChronographvsSmiths Armstrong Siddeley Farer CHRONO-SPORTvsSmiths Armstrong Siddeley

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

Smiths Armstrong SiddeleyvsStraton Straton Syncro MKII Mechanical Chrono

At a glance

Full specifications

More watches worth a look

The Field Watch

HFC Mechanical Chronograph

ARCTIC GMT

CHRONO-SPORT

Model Two

Flyback

Waves Summer Automatic

Islander Bridgehampton Racing Chronograph with Asphalt Black Dial #ISL-234

Follow this matchup

People also compared