lug2lug
BrowseCompareNewsCommunityMy Watches
BrowseCompareNewsCommunityMy Watches
Theme
Popular microbrands:Christopher Ward·Baltic·anOrdain·Atelier Wen·Boldr·Bremont·Dan Henry·DOXABrowse all →
Best, by the specs:Diver under $2,000·Dress under $5,000·Chronograph under $5,000·Best sport watches·GMT under $5,000·Field under $500·Pilot under $2,000·Casual under $1,000All rankings →
Glossary:Lug-to-Lug·Water Resistance·Chronograph·GMT·Automatic·LumeBrowse all →
Tools:Collection tracker·Watch size chart·Wrist-fit calculator·Selling calculator·What should I buy?·Market index·iPhone app
Lug2Letter
Watches worth knowing about, weekly.
Curated discoveries, founder spotlights, and the occasional deep-dive.
Get the app
Download on theApp StoreGET IT ONGoogle Play
TermsPrivacyDelete accountCopyrightDisclosuresContactContribute

Independent reference site · not affiliated with any brand · contains affiliate links

© 2026 Lug2Lug LLC · Prices are estimates and not offers

Watches/Alternatives/IWC Schaffhausen Iw3910 Portofino Chronograph (79320 Movement)

Watch alternatives

Alternatives to the IWC Schaffhausen Iw3910 Portofino Chronograph (79320 Movement)

Reference IW391029

Keep what you like. Explore what could be different. Compare 47 catalog matches by dimensions, movement and price.

Explore the matches ↓View original watch ↗
Case diameter
42 mm
Lug-to-lug
Not recorded
Movement
Automatic
Catalog MSRP
$6,900
IWC Schaffhausen Iw3910 Portofino Chronograph (79320 Movement)The starting point
Your next watch starts with a shortlist.

Save favorites here, compare the details, and keep your collection with you in the app.

Explore the app ↗My watches ↗

Starting points

Choose the differences that matter to you.

Closest catalog matchIWC Schaffhausen Portofino ChronographSame 42 mm case diameterSee the match ↓
Lower recorded MSRPIWC Schaffhausen Iw3914 Portofino Chronograph$6,800 recorded MSRP, $100 lowerSee the match ↓

Calculated from catalog specifications and similarity signals. Prices are recorded MSRP in USD. Missing measurements stay unknown.

Your priorities

Narrow these matches without leaving the page.

ColorwayPick a colorway to match a specific dial
47 matches

Microbrand picks· 11

Discover smaller makers with catalog similarities to this watch.

Orologi Calamai G50 Freccia
Orologi Calamai

G50 Freccia

  • $3,190 recorded MSRP, $3,710 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

0.8 mm thicker case

View watch ↗
Compare models ↗
BERNY Full Calendar
BERNY

Full Calendar

  • $105 recorded MSRP, $6,795 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

0.9 mm thicker case

View watch ↗
Compare models ↗
Knot Watches ATC-40
Knot Watches

ATC-40

  • $1,257 recorded MSRP, $5,643 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Orologi Calamai G50 Freccia Antracite
Orologi Calamai

G50 Freccia Antracite

  • $3,190 recorded MSRP, $3,710 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

0.8 mm thicker case

View watch ↗
Compare models ↗
Bamford of London Carbon B347
Bamford of London

Carbon B347

  • $2,847 recorded MSRP, $4,053 lower
  • 41.5 mm case, 0.5 mm narrower
  • Both use automatic movements
What changes

0.9 mm thicker case

View watch ↗
Compare models ↗
Bohen Stella Veloce
Bohen

Stella Veloce

  • Same 42 mm case diameter
  • Both use automatic movements
What changes

$10,789 recorded MSRP, $3,889 higher

View watch ↗
Compare models ↗
Archimede Watches Klassik Chronograph
Archimede Watches

Klassik Chronograph

  • $1,960 recorded MSRP, $4,940 lower
  • Same 42 mm case diameter
  • Both use automatic movements
What changes

Dimensions alone do not establish wrist fit.

View watch ↗
Compare models ↗
Knot Watches ATC-40SVJRBK-R_LD-16SVSV-ATC-40
Knot Watches

ATC-40SVJRBK-R_LD-16SVSV-ATC-40

  • $1,756 recorded MSRP, $5,144 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Knot Watches ATC-40BKBK
Knot Watches

ATC-40BKBK

  • $1,331 recorded MSRP, $5,569 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Lilienthal Berlin Chronograph Meteorite I Mesh Anthracite Matte
Lilienthal Berlin

Chronograph Meteorite I Mesh Anthracite Matte

  • $314 recorded MSRP, $6,586 lower
  • 42.5 mm case, 0.5 mm wider
What changes

Quartz movement instead of automatic. 3.3 mm thinner case

View watch ↗
Compare models ↗
Echo/Neutra 1956 Chrono
Echo/Neutra

1956 Chrono

  • $2,060 recorded MSRP, $4,840 lower
  • 40 mm case, 2 mm narrower
What changes

Manual winding chronograph movement instead of automatic. 0.5 mm thicker case

View watch ↗
Compare models ↗

Mainstream picks· 12

Established-brand matches. Compare the recorded dimensions, movement and price for each watch.

IWC Schaffhausen Iw3914 Portofino Chronograph
IWC Schaffhausen

Iw3914 Portofino Chronograph

  • $6,800 recorded MSRP, $100 lower
  • 39 mm case, 3 mm narrower
  • Both use automatic movements
What changes

0.9 mm thinner case

View watch ↗
Compare models ↗
IWC Schaffhausen Iw388111 Pilot's Watch Chronograph
IWC Schaffhausen

Iw388111 Pilot's Watch Chronograph

  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

0.9 mm thicker case. $7,500 recorded MSRP, $600 higher

View watch ↗
Compare models ↗
IWC Schaffhausen Iw3716 Portugieser Chronograph
IWC Schaffhausen

Iw3716 Portugieser Chronograph

  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

0.6 mm thinner case. $8,900 recorded MSRP, $2,000 higher

View watch ↗
Compare models ↗
Bell & Ross BR V2-94 R.S.18
Bell & Ross

BR V2-94 R.S.18

  • $4,968 recorded MSRP, $1,932 lower
  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Bell & Ross BR V3-94 A521
Bell & Ross

BR V3-94 A521

  • $4,752 recorded MSRP, $2,148 lower
  • 43 mm case, 1 mm wider
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Breitling Navitimer B01 Chronograph
Breitling

Navitimer B01 Chronograph

  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

$10,300 recorded MSRP, $3,400 higher

View watch ↗
Compare models ↗
Omega Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm
Omega

Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm

  • Same 42 mm case diameter
What changes

Manual movement instead of automatic. 0.4 mm thinner case

View watch ↗
Compare models ↗
TAG Heuer Carrera
TAG Heuer

Carrera

  • $6,800 recorded MSRP, $100 lower
  • Same 42 mm case diameter
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Norqain Adventure Sport Chrono 44mm DLC
Norqain

Adventure Sport Chrono 44mm DLC

  • $5,450 recorded MSRP, $1,450 lower
  • 44 mm case, 2 mm wider
  • Both use automatic movements
What changes

2.4 mm thicker case

View watch ↗
Compare models ↗
Breitling Aviator 8 B01 Chronograph 43
Breitling

Aviator 8 B01 Chronograph 43

  • 43 mm case, 1 mm wider
  • Both use automatic movements
What changes

0.4 mm thicker case. $9,300 recorded MSRP, $2,400 higher

View watch ↗
Compare models ↗
Breitling Aviator 8 Chronograph 43
Breitling

Aviator 8 Chronograph 43

  • $6,700 recorded MSRP, $200 lower
  • 43 mm case, 1 mm wider
  • Both use automatic movements
What changes

0.6 mm thicker case

View watch ↗
Compare models ↗
TAG Heuer Carrera
TAG Heuer

Carrera

  • 44 mm case, 2 mm wider
  • Both use automatic movements
What changes

1.7 mm thicker case. $7,300 recorded MSRP, $400 higher

View watch ↗
Compare models ↗

Cheaper alternatives· 12

Matches in a lower price band. A recorded MSRP difference is shown only when both prices are known.

Hamilton American Classic Intra-Matic Auto Chrono
Hamilton

American Classic Intra-Matic Auto Chrono

  • $2,625 recorded MSRP, $4,275 lower
  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

0.8 mm thicker case

View watch ↗
Compare models ↗
Hamilton Jazzmaster Auto Chrono
Hamilton

Jazzmaster Auto Chrono

  • $1,845 recorded MSRP, $5,055 lower
  • Same 42 mm case diameter
  • Both use automatic movements
What changes

1.2 mm thicker case

View watch ↗
Compare models ↗
Hamilton Khaki Field Auto Chrono
Hamilton

Khaki Field Auto Chrono

  • $2,175 recorded MSRP, $4,725 lower
  • Same 42 mm case diameter
  • Both use automatic movements
What changes

0.9 mm thicker case

View watch ↗
Compare models ↗
Seiko Prospex Speedtimer Mechanical Chronograph
Seiko

Prospex Speedtimer Mechanical Chronograph

  • $2,500 recorded MSRP, $4,400 lower
  • Same 42 mm case diameter
  • Both use automatic movements
What changes

1 mm thicker case

View watch ↗
Compare models ↗
Damasko DC66
Damasko

DC66

  • Same 42 mm case diameter
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Seiko Prospex Speedtimer Mechanical Chronograph Limited Edition
Seiko

Prospex Speedtimer Mechanical Chronograph Limited Edition

  • $3,000 recorded MSRP, $3,900 lower
  • 42.5 mm case, 0.5 mm wider
  • Both use automatic movements
What changes

1.5 mm thicker case

View watch ↗
Compare models ↗
Damasko DC58
Damasko

DC58

  • 40 mm case, 2 mm narrower
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Damasko DC96
Damasko

DC96

  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Junghans FORM A Chronoscope, Date English
Junghans

FORM A Chronoscope, Date English

  • $2,510 recorded MSRP, $4,390 lower
  • Same 42 mm case diameter
  • Both use automatic movements
What changes

Lug-to-lug is not recorded for this match.

View watch ↗
Compare models ↗
Orient Bambino Version 9
Orient

Bambino Version 9

  • $410 recorded MSRP, $6,490 lower
  • 41.5 mm case, 0.5 mm narrower
  • Both use automatic movements
What changes

0.6 mm thicker case

View watch ↗
Yema Rallygraf Alpine Cup Series Limited Edition
Yema

Rallygraf Alpine Cup Series Limited Edition

  • $2,425 recorded MSRP, $4,475 lower
  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

1.1 mm thinner case

View watch ↗
Compare models ↗
Seiko Prospex Speedtimer
Seiko

Prospex Speedtimer

  • $3,000 recorded MSRP, $3,900 lower
  • 42.5 mm case, 0.5 mm wider
  • Both use automatic movements
What changes

1.5 mm thicker case

View watch ↗
Compare models ↗

Pricier alternatives· 12

Matches in a higher price band. Check the specifications to decide whether the differences matter to you.

IWC Schaffhausen Portofino Chronograph
IWC Schaffhausen

Portofino Chronograph

  • Same 42 mm case diameter
  • Both use automatic movements
What changes

$21,900 recorded MSRP, $15,000 higher

View watch ↗
Compare models ↗
IWC Schaffhausen Portofino Complete Calendar
IWC Schaffhausen

Portofino Complete Calendar

  • 41 mm case, 1 mm narrower
  • Both use automatic movements
What changes

1.9 mm thinner case. $24,800 recorded MSRP, $17,900 higher

View watch ↗
Compare models ↗
IWC Schaffhausen Portofino Hand Wound Moon Phase
IWC Schaffhausen

Portofino Hand Wound Moon Phase

  • 45 mm case, 3 mm wider
What changes

Manual movement instead of automatic. 0.5 mm thinner case

View watch ↗
Compare models ↗
Omega Speedmaster Calibre 321 Chronograph 42mm
Omega

Speedmaster Calibre 321 Chronograph 42mm

  • Same 42 mm case diameter
What changes

Manual movement instead of automatic. 0.2 mm thinner case

View watch ↗
Compare models ↗
TAG Heuer Carrera Chronograph Tourbillon Extreme Sport Th Carbonspring
TAG Heuer

Carrera Chronograph Tourbillon Extreme Sport Th Carbonspring

  • 44 mm case, 2 mm wider
  • Both use automatic movements
What changes

1.8 mm thicker case

View watch ↗
Compare models ↗
A. Lange & Söhne Datograph Updown
A. Lange & Söhne

Datograph Updown

  • 41 mm case, 1 mm narrower
What changes

Manual movement instead of automatic. 0.5 mm thinner case

View watch ↗
Compare models ↗
Breitling Navitimer B19 Chronograph 43 Perpetual Calendar
Breitling

Navitimer B19 Chronograph 43 Perpetual Calendar

  • 43 mm case, 1 mm wider
  • Both use automatic movements
What changes

1.3 mm thicker case. $52,000 recorded MSRP, $45,100 higher

View watch ↗
Compare models ↗
Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 43mm
Omega

Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 43mm

  • 43 mm case, 1 mm wider
What changes

Manual movement instead of automatic. $19,300 recorded MSRP, $12,400 higher

View watch ↗
Compare models ↗
Jaeger-LeCoultre Polaris Chronograph Stainless Steel
Jaeger-LeCoultre

Polaris Chronograph Stainless Steel

  • Same 42 mm case diameter
  • Both use automatic movements
What changes

0.2 mm thinner case. $17,600 recorded MSRP, $10,700 higher

View watch ↗
Compare models ↗
TAG Heuer Carrera Chronograph Tourbillon Extreme Sport
TAG Heuer

Carrera Chronograph Tourbillon Extreme Sport

  • 44 mm case, 2 mm wider
  • Both use automatic movements
What changes

1.5 mm thicker case. $39,350 recorded MSRP, $32,450 higher

View watch ↗
Compare models ↗
Hublot Big Bang Unico 42mm Ceramic
Hublot

Big Bang Unico 42mm Ceramic

  • Same 42 mm case diameter
  • Both use automatic movements
What changes

$27,600 recorded MSRP, $20,700 higher

View watch ↗
Compare models ↗
Bremont Jaguar Limited Edition
Bremont

Jaguar Limited Edition

  • 43 mm case, 1 mm wider
  • Both use automatic movements
What changes

2.2 mm thicker case. $16,000 recorded MSRP, $9,100 higher

View watch ↗
Keep your wishlist and collection together on iPhone and AndroidExplore the app
Get the appGet the app

Keep exploring

Follow a detail, a style, or a new direction.

Check your wrist fit ↗

Explore how case diameter and lug-to-lug relate to your wrist.

Find your watch style ↗

Use the quiz to explore watches around your preferences.

Best Chronograph Watches Under $500 ↗

Explore a wider set of watches in this category.