Smartlet One
Smartlet One
One concept. Three different personalities
Wear a Smartwatch with Your IWC | Smartlet
Brand compatibility guide
IWC
Wear a smartwatch
with your IWC
Smartlet One is compatible with all IWC Portugieser, Pilot's Watch, and Aquatimer references using 20mm to 22mm lug widths, natively supported with no adapter. Installation uses the standard spring-bar system - no modification to the watch, fully reversible in seconds.
IWC Schaffhausen engineers watches in a Rhine valley town that has produced precision instruments since 1868. The Portugieser's clean dial, the Pilot's Watch crown protector, the Mark XVIII's legibility - each reference solves a specific visual and functional problem. IWC collectors are drawn to engineering over decoration. Smartlet One shares that orientation: it attaches via spring bars, adds smartwatch capability to the same wrist, and leaves the case and movement exactly as manufactured.
222+References
18mm / 20mm / 21mm / 22mmLug widths
18mm→24mmSmartlet range
How it works
Three steps to both watches on one wrist
01
Choose your strap
Smartlet One is your new strap. It replaces the original bracelet or strap on your Rolex using the same spring-bar system. Lug widths 20mm / 21mm are all natively supported.
02
Clip in your watch
Attach the Smartlet strap to your Rolex by fitting the spring bars into the lugs, exactly as with any standard strap change. No tools required. Fully reversible in seconds.
03
Clip in your smartwatch
Slide your smartwatch into the Smartlet module. It locks onto the strap module on the wrist side of your wrist. All sensors remain fully operational. Both watches run simultaneously.
Model guides
IWC iconic models
Each guide covers all references, variants, lug widths, and step-by-step Smartlet installation for one specific model line.
Compatible
IWC
Big Pilot
The oversized pilot's watch, taken to the extreme. The Big Pilot's 46mm case, domed sapphire crystal, and crown-protecting device trace directly back to the Ref. 52 T.S.C. of 1940.
Case
43mm / 46mm
Lug width
21mm / 22mm
Movement
Cal. 51111 / 82100
References
18
Compatible
IWC Schaffhausen
IWC Portugieser Automatic 40
Dress watch precision from a tool watch legacy. The Portugieser's 40mm diameter and slim profile frame a large dial with railway-track minute scale - refined without being precious.
Case
40mm
Lug width
18mm / 20mm / 21mm / 22mm
Movement
Cal. 82100
References
23
Full database
Other IWC references
204 references grouped into 25 model families. All compatible. Expand any group to see variants, references, and specifications.
150
Reference
Material
Dial
Lug
Smartlet
IW590202
18K Red Gold
White Lacquer
22mm
Compatible
IW356601-150Y
Stainless Steel
White Lacquer
20mm
Compatible
IW501007
Stainless Steel
Blue Lacquer
22mm
Compatible
IW377725
Stainless Steel
Blue Lacquer
21mm
Compatible
IW504501-PLAT
Platinum
White Lacquer
22mm
Compatible
70s
Reference
Material
Dial
Lug
Smartlet
JumboTV-1974
Stainless Steel
Blue
22mm
Compatible
JumboTV-1976
Stainless Steel
Brown Fumé
22mm
Compatible
Aquatimer
Reference
Material
Dial
Lug
Smartlet
Aquatimer 2000
IW356806
Ceramic Black
Black
22mm
Compatible
Aquatimer 3536
AQT-3536-1997
Stainless Steel
Black
18mm
Compatible
AQT-3536-TI-1998
Titanium
Grey
18mm
Compatible
Aquatimer Automatic
IW356809
Titanium
Black
22mm
Compatible
AQT-812-1967
Stainless Steel
Silver
19mm
Compatible
IW356802
Stainless Steel
Black
22mm
Compatible
Aquatimer Charles
IW379503
Bronze
Brown
22mm
Compatible
Aquatimer Chrono
IW371903
Stainless Steel
Black
20mm
Compatible
Aquatimer Cousteau
Cousteau-2004-IW354806
Stainless Steel
Blue
20mm
Compatible
Cousteau-2006-IW354807
Stainless Steel
Blue/Orange
22mm
Compatible
IW354806
Stainless Steel
Blue
20mm
Compatible
Cousteau-2008-IW376705
Stainless Steel
Blue
22mm
Compatible
Cousteau-2014-IW376805
Stainless Steel
Blue
22mm
Compatible
Cousteau-Bronze-2016
Bronze
Blue
22mm
Compatible
Aquatimer Deep
IW355701
Titanium
Black
22mm
Compatible
IW354801
Stainless Steel
Black
22mm
Compatible
Aquatimer Expedition
IW376805
Stainless Steel
Blue
22mm
Compatible
Aquatimer GST
GST2000-1998
Titanium
Grey
20mm
Compatible
GST-AT-TI-1998
Titanium
Grey
20mm
Compatible
GST-SPLIT-2002
Titanium
Grey
20mm
Compatible
GST-AT-1998
Stainless Steel
Black
20mm
Compatible
GST-CH-1999
Stainless Steel
Black
20mm
Compatible
Aquatimer Galapagos
IW379502
Black Rubber-Coated
Black
22mm
Compatible
Aquatimer Perpetual
IW379401
Stainless Steel
Black
24mm
Compatible
Aquatimer Split-Minute
IW372301
Stainless Steel
Black
22mm
Compatible
IW372301
Stainless Steel
Black
22mm
Compatible
Boutique
Reference
Material
Dial
Lug
Smartlet
Boutique Edition
BTQ-PW-RED-2018
Stainless Steel
Red Lacquer
20mm
Compatible
BTQ-PLT-BRN-2019
Stainless Steel
Brown Sunburst
22mm
Compatible
BTQ-PF-PURP-2021
Stainless Steel
Purple
20mm
Compatible
BTQ-ING-TURQ-2023
Stainless Steel
Turquoise
20mm
Compatible
Boutique Limited
BTQ-AQT-ORG-2017
Stainless Steel
Orange
22mm
Compatible
Calibre
Reference
Material
Dial
Lug
Smartlet
Calibre 402
IWC-402-1960
Stainless Steel
Silver
18mm
Compatible
Calibre 403
IWC-403-1962
Stainless Steel
White
18mm
Compatible
Calibre 852
IWC-852-1952
Stainless Steel
Silver
18mm
Compatible
Calibre 853
IWC-853-1958
Stainless Steel
Black
18mm
Compatible
Calibre 8541B
IWC-8541B-1967
Stainless Steel
Silver
18mm
Compatible
IWC-8541B-1967
Stainless Steel
Silver
18mm
Compatible
Calibre 89
IWC-C89-1948
Stainless Steel
Silver
18mm
Compatible
IWC-89-1952
Stainless Steel
Silver
18mm
Compatible
IWC-C89-BLK-1955
Stainless Steel
Black
18mm
Compatible
IWC-89-BLK-1955
Stainless Steel
Black
18mm
Compatible
Da
Reference
Material
Dial
Lug
Smartlet
IW375001
18K Yellow Gold
White
20mm
Compatible
IW375001
18K Yellow Gold
White
20mm
Compatible
IW393101
18K Red Gold
Silver
22mm
Compatible
DaV-Q-1977
Stainless Steel
Silver
18mm
Compatible
DaV-1977
Stainless Steel
Silver
18mm
Compatible
IW3750-002
Stainless Steel
White
20mm
Compatible
IW376601
Ceramic Black
Black
22mm
Compatible
IW376204
Stainless Steel
Silver
22mm
Compatible
IW458307
Stainless Steel
Silver
18mm
Compatible
IW356602
Stainless Steel
Blue
20mm
Compatible
IW356601
Stainless Steel
Silver
20mm
Compatible
IW393402
Stainless Steel
Blue
22mm
Compatible
IW459306
Stainless Steel
White Mop
18mm
Compatible
IW459308
Stainless Steel
White Mop
18mm
Compatible
IW392101
Stainless Steel
Silver
20mm
Compatible
IW458312
Stainless Steel
White Lacquer
18mm
Compatible
F.A.
Reference
Material
Dial
Lug
Smartlet
IW544201
Stainless Steel
White Enamel
22mm
Compatible
Flieger
Reference
Material
Dial
Lug
Smartlet
Flieger 1950s
FLIEGER-1955
Stainless Steel
Black
18mm
Compatible
Flieger 1960s
F-1964
Stainless Steel
Black
18mm
Compatible
IWC
Reference
Material
Dial
Lug
Smartlet
IWC 70s
Jumbo-1974
Stainless Steel
Silver
22mm
Compatible
IWC Automatic
852-1960
Stainless Steel
Silver
18mm
Compatible
IWC Dress
Dress-18k-1972
18K Yellow Gold
Champagne
18mm
Compatible
IWC Slim
SLIM-1963
Stainless Steel
Silver
18mm
Compatible
Ingenieur
Reference
Material
Dial
Lug
Smartlet
Ingenieur 3227
IW322701
Stainless Steel
Black
22mm
Compatible
Ingenieur 3236
IW323607
Titanium
Grey
22mm
Compatible
Ingenieur 3239
IW323902
Stainless Steel
Silver
20mm
Compatible
Ingenieur 3536
IW3536-002
Titanium
Grey
20mm
Compatible
Ingenieur 40
IW328904
Stainless Steel
Aqua Blue
20mm
Compatible
Ingenieur 484679
IW322701
Titanium
Grey
22mm
Compatible
Ingenieur 500kA/m
IW3508
Stainless Steel
Black
18mm
Compatible
Ingenieur 666A
666A-1955
Stainless Steel
Silver
18mm
Compatible
Ingenieur 666AD
666AD-1958
Stainless Steel
Silver
18mm
Compatible
Ingenieur 866
866-1967
Stainless Steel
Silver
18mm
Compatible
Ingenieur Automatic
IW328901
Stainless Steel
Black
20mm
Compatible
IW328901
Stainless Steel
Black
20mm
Compatible
IW328904
Stainless Steel
Aqua Blue
20mm
Compatible
JDM
Reference
Material
Dial
Lug
Smartlet
JDM Ingenieur
JDM-ING40-AQUA-2023
Stainless Steel
Aqua Blue
20mm
Compatible
JDM Mark
JDM-MK18-WHT-2018
Stainless Steel
White
20mm
Compatible
JDM Pilot
JDM-IW3713-BLUE
Stainless Steel
Blue Sunburst
20mm
Compatible
JDM Portofino
JDM-PF-GRN-2020
Stainless Steel
Green
20mm
Compatible
Japan
Reference
Material
Dial
Lug
Smartlet
BTQ-BP-BLUE-2019
Stainless Steel
Blue
22mm
Compatible
Laureus
Reference
Material
Dial
Lug
Smartlet
Laureus Big
IW501012
Stainless Steel
Blue Laureus
22mm
Compatible
Laureus Pilot
IW371615
Stainless Steel
Blue Laureus
20mm
Compatible
Laureus Portugieser
IW371491
Stainless Steel
Blue Laureus
20mm
Compatible
Mark
Reference
Material
Dial
Lug
Smartlet
Mark IX
MARK9-1935
Stainless Steel
Black
18mm
Compatible
Mark X
MARK10-1944
Stainless Steel
Black
18mm
Compatible
Mark XI
MARK11-RAF-1948
Stainless Steel
Black
18mm
Compatible
Mark XII
JUB-MKXII-1993
Stainless Steel
Silver
18mm
Compatible
Mark XV
IW325301
Stainless Steel
Black
19mm
Compatible
Mark XVI
IW325501
Stainless Steel
Black
20mm
Compatible
Mark XVII
IW326501
Stainless Steel
Black
21mm
Compatible
Mark XVIII
IW327009
Stainless Steel
Black
20mm
Compatible
IW327012
Stainless Steel
White
20mm
Compatible
Mark XX
IW328201
Stainless Steel
Black
20mm
Compatible
IW328203
Stainless Steel
Blue
20mm
Compatible
Miramar
Reference
Material
Dial
Lug
Smartlet
Miramar Automatic
IW324702
Ceramic Grey
Anthracite
20mm
Compatible
Miramar Chronograph
IW389002
Ceramic Grey
Anthracite
22mm
Compatible
Pallweber
Reference
Material
Dial
Lug
Smartlet
Pallweber Platinum
IW505001
Platinum
White Lacquer
22mm
Compatible
IW505001
Platinum
White Lacquer
22mm
Compatible
Pallweber Revival
IW505002
18K Red Gold
White Lacquer
22mm
Compatible
IW505002
18K Red Gold
White Lacquer
22mm
Compatible
IW505003
Stainless Steel
Blue Lacquer
22mm
Compatible
IW505003
Stainless Steel
Blue Lacquer
22mm
Compatible
Pilot
Reference
Material
Dial
Lug
Smartlet
Pilot 1950s
6540-1955
Stainless Steel
Black
18mm
Compatible
Pilot 1960s
807A-1961
Stainless Steel
Black
18mm
Compatible
Pilot Chronograph
IW387902
Bronze
Green
20mm
Compatible
IW3705-03
Ceramic Black
Black
20mm
Compatible
IW3706-01
Stainless Steel
Black
20mm
Compatible
IW377709
Stainless Steel
Black
21mm
Compatible
IW377717
Stainless Steel
Blue
21mm
Compatible
IW378901
Stainless Steel
Black
21mm
Compatible
IW387901
Stainless Steel
Black
20mm
Compatible
IW389101
Ceramic Black
Black
22mm
Compatible
IW389103
Ceramic Sand
Beige
22mm
Compatible
IW388102
Stainless Steel
Blue
20mm
Compatible
IW389105
Ceramic White
White
22mm
Compatible
IW389106
Ceramic Green
Green
22mm
Compatible
IW378003
Stainless Steel
White/Black Panda
20mm
Compatible
Pilot Day-Date
IW326506
Stainless Steel
Blue
20mm
Compatible
Pilot Mark
MkX-1944
Stainless Steel
Black
18mm
Compatible
MarkXI-1948
Stainless Steel
Black
18mm
Compatible
Pilot Spitfire
IW387902
Bronze
Green
20mm
Compatible
IW503601
18K Red Gold
Green
22mm
Compatible
Pilot “Petit
IW371807
Stainless Steel
Blue
22mm
Compatible
IW377714
Stainless Steel
Blue
21mm
Compatible
IW327010
Stainless Steel
Blue
20mm
Compatible
Porsche
Reference
Material
Dial
Lug
Smartlet
IW3510
Titanium
Black
22mm
Compatible
BUND-OCEAN-1982
Titanium
Grey
20mm
Compatible
IW3700
Titanium
Grey
20mm
Compatible
IW3702
Titanium
Black
20mm
Compatible
IW3500
Titanium
Grey
20mm
Compatible
IW3723
Titanium
Black
22mm
Compatible
IW3538
Titanium
Grey
20mm
Compatible
Portofino
Reference
Material
Dial
Lug
Smartlet
Portofino Automatic
IW458116
18K Red Gold
White Mop
18mm
Compatible
Port-1984
Stainless Steel
Silver
18mm
Compatible
IW356502
Stainless Steel
Black
20mm
Compatible
IW356501
Stainless Steel
Silver
20mm
Compatible
Portofino Blue
IW356518
Stainless Steel
Blue
20mm
Compatible
Portofino Chronograph
IW391030
Stainless Steel
Blue
20mm
Compatible
IW391027
Stainless Steel
Silver
20mm
Compatible
IW391502
Stainless Steel
Green
20mm
Compatible
Portofino Hand-Wound
IW516401
18K Red Gold
Silver
22mm
Compatible
IW510104
Stainless Steel
Silver
22mm
Compatible
IW510106
Stainless Steel
Blue
22mm
Compatible
IW510106
Stainless Steel
Silver
22mm
Compatible
IW510705
Stainless Steel
Blue Laureus
22mm
Compatible
Portofino Moonphase
IW459001
Stainless Steel
White
18mm
Compatible
IW459001
Stainless Steel
White
18mm
Compatible
IW516401
Red Gold
Silver
22mm
Compatible
Portofino Vintage
PF-1965
Stainless Steel
Silver
18mm
Compatible
Port-1965
Stainless Steel
Silver
18mm
Compatible
Portugieser
Reference
Material
Dial
Lug
Smartlet
Portugieser 150
IW371601
Stainless Steel
Blue Lacquer
20mm
Compatible
IW371602
Stainless Steel
White Lacquer
20mm
Compatible
Portugieser 325
325-1954
Stainless Steel
Silver
18mm
Compatible
Portugieser 3714
IW371401
Stainless Steel
Silver
20mm
Compatible
IW371417
Stainless Steel
Blue
20mm
Compatible
Portugieser Annual
IW503501
Stainless Steel
Silver
22mm
Compatible
Portugieser Automatic
IW500703
Stainless Steel
Black
22mm
Compatible
IW500710
Stainless Steel
Blue
22mm
Compatible
IW500705
Stainless Steel
Silver
22mm
Compatible
Portugieser Chronograph
IW371601
Stainless Steel
Blue Lacquer
20mm
Compatible
IW371602
Stainless Steel
White Lacquer
20mm
Compatible
IW371606
Stainless Steel
Blue
20mm
Compatible
IW371605
Stainless Steel
White
20mm
Compatible
IW371614
Stainless Steel
White/Black Panda
20mm
Compatible
Portugieser Jubilee
IW544101
Stainless Steel
White Enamel
22mm
Compatible
Portugieser Perpetual
IW503406
18K Red Gold
Blue Lacquer
22mm
Compatible
IW503302
18K Red Gold
Silver
22mm
Compatible
Portugieser Tourbillon
IW504501
18K Red Gold
White Lacquer
22mm
Compatible
IW504401
18K Red Gold
Silver
22mm
Compatible
Portugieser Yacht
IW390503
Stainless Steel
Blue
22mm
Compatible
Prototype
Reference
Material
Dial
Lug
Smartlet
Prototype Aquatimer
PROTO-AQT3000-2010
Steel
Black
24mm
Compatible
Prototype Ceramic
PROTO-CER-2008
Ceramic
Black
22mm
Compatible
Prototype Ingenieur
PROTO-ING-CER-2015
Ceramic
Black
22mm
Compatible
Prototype Pallweber
PROTO-PALL-2016
Steel
White
22mm
Compatible
Prototype Portugieser
PROTO-IW5000-2000
Stainless Steel
Silver
21mm
Compatible
RAAF
Reference
Material
Dial
Lug
Smartlet
RAAF-1955-IWC
Stainless Steel
Black
18mm
Compatible
Spitfire
Reference
Material
Dial
Lug
Smartlet
Spitfire Automatic
IW326802
Bronze
Green
20mm
Compatible
IW326801
Stainless Steel
Green
20mm
Compatible
Spitfire Chronograph
IW387902
Bronze
Green
20mm
Compatible
IW387901
Stainless Steel
Black
20mm
Compatible
Spitfire Perpetual
IW503601
Bronze
Green
22mm
Compatible
Spitfire Timezoner
IW395501
Stainless Steel
Black
22mm
Compatible
Spitfire UTC
IW325103
18K Yellow Gold
Silver
20mm
Compatible
IW325101
Stainless Steel
Black
20mm
Compatible
Top
Reference
Material
Dial
Lug
Smartlet
IW324702
Ceramic Grey
Anthracite
20mm
Compatible
IW389002
Ceramic Grey
Anthracite
22mm
Compatible
IW389103
Ceramic
Sand
22mm
Compatible
IW371815
Ceratanium
Black
22mm
Compatible
IW371815
Ceratanium
Black
22mm
Compatible
IW503004
Ceramic Black
Black
22mm
Compatible
IW503001
Ceramic Sand
Beige
22mm
Compatible
IW379901
Ceramic Black
Black
22mm
Compatible
IW328101
Ceramic White
White
20mm
Compatible
IW328205
Ceramic Green
Green
20mm
Compatible
Vietnam
Reference
Material
Dial
Lug
Smartlet
VN-SOG-1967-IWC
Stainless Steel
Black
18mm
Compatible
Compatible smartwatches
Smartwatches to pair with your IWC
Wear your smartwatch simultaneously with your IWC via Smartlet One. Lug widths 18mm to 24mm natively supported.
Apple Watch
View pairing guide →
Samsung Galaxy Watch
View pairing guide →
Garmin Fenix
View pairing guide →
Garmin Forerunner
View pairing guide →
Garmin Venu
View pairing guide →
Google Pixel Watch
View pairing guide →
Withings ScanWatch
View pairing guide →
Polar Vantage
View pairing guide →
Fitbit Charge
View pairing guide →
Huawei Watch GT
View pairing guide →
Coros
View pairing guide →
Suunto
View pairing guide →
Whoop
View pairing guide →
Questions
Frequently asked questions
Does Smartlet work with IWC watches?
Yes. IWC references from 18mm to 22mm lug width are natively supported. Portugieser 40 and Big Pilot are both covered.
Will Smartlet affect IWC water resistance?
No. Smartlet uses standard spring bars. The case seals are completely untouched.
Which IWC models have dedicated guides?
The Portugieser Automatic 40 and Big Pilot each have a full reference table and installation guide.
