Wear a smartwatch with your 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.
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Patented
IWC compatibility

Wear a smartwatch with your IWC

In short 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.

Wear yours How it works
The problem
Choosing between health data and horological heritage every morning.
The solution
Smartlet One replaces your IWC's strap via the standard spring-bar system and positions your smartwatch on the same wrist. Both watches run simultaneously, with no modification to the watch and full reversibility in seconds.
Brand
IWC
Lug widths
18.0mm / 20.0mm / 21.0mm / 22.0mm
Iconic models
2covered
Compatibility
Full range

Choose your edition

One mechanism. Three personalities.

Every Smartlet One includes the dedicated adapter for your wearable. Pick the finish that matches your style.

Smartlet One - Shadow - Smartlet

For the explorer

Smartlet One - Shadow

€399,00

4.9 (16)

Stealth. Switch in seconds, leave no trace.

  • Material SS316L steel, black PVD
  • Weight ~100g
  • Compatible with Rolex, Omega, Seiko + 100 more
Buy now
Compatibility

IWC models supported

IWC Big Pilot
21mm / 22mm
IWC Portugieser Automatic 40
18mm / 20mm / 21mm / 22mm

Other IWC references

25 model families. Expand any group to see variants, references, and specifications.

150
20mm / 21mm / 22mm5 refs+
ReferenceMaterialDialLugSmartlet
IW59020218K Red GoldWhite Lacquer22mmCompatible
IW356601-150YStainless SteelWhite Lacquer20mmCompatible
IW501007Stainless SteelBlue Lacquer22mmCompatible
IW377725Stainless SteelBlue Lacquer21mmCompatible
IW504501-PLATPlatinumWhite Lacquer22mmCompatible
70s
22mm2 refs+
ReferenceMaterialDialLugSmartlet
JumboTV-1974Stainless SteelBlue22mmCompatible
JumboTV-1976Stainless SteelBrown Fumé22mmCompatible
Aquatimer
18mm / 19mm / 20mm / 22mm / 24mm26 refs+
ReferenceMaterialDialLugSmartlet
IW356806Ceramic BlackBlack22mmCompatible
AQT-3536-1997Stainless SteelBlack18mmCompatible
AQT-3536-TI-1998TitaniumGrey18mmCompatible
IW356809TitaniumBlack22mmCompatible
AQT-812-1967Stainless SteelSilver19mmCompatible
IW356802Stainless SteelBlack22mmCompatible
IW379503BronzeBrown22mmCompatible
IW371903Stainless SteelBlack20mmCompatible
Cousteau-2004-IW354806Stainless SteelBlue20mmCompatible
Cousteau-2006-IW354807Stainless SteelBlue/Orange22mmCompatible
IW354806Stainless SteelBlue20mmCompatible
Cousteau-2008-IW376705Stainless SteelBlue22mmCompatible
Cousteau-2014-IW376805Stainless SteelBlue22mmCompatible
Cousteau-Bronze-2016BronzeBlue22mmCompatible
IW355701TitaniumBlack22mmCompatible
IW354801Stainless SteelBlack22mmCompatible
IW376805Stainless SteelBlue22mmCompatible
GST2000-1998TitaniumGrey20mmCompatible
GST-AT-TI-1998TitaniumGrey20mmCompatible
GST-SPLIT-2002TitaniumGrey20mmCompatible
GST-AT-1998Stainless SteelBlack20mmCompatible
GST-CH-1999Stainless SteelBlack20mmCompatible
IW379502Black Rubber-CoatedBlack22mmCompatible
IW379401Stainless SteelBlack24mmCompatible
IW372301Stainless SteelBlack22mmCompatible
IW372301Stainless SteelBlack22mmCompatible
Boutique
20mm / 22mm5 refs+
ReferenceMaterialDialLugSmartlet
BTQ-PW-RED-2018Stainless SteelRed Lacquer20mmCompatible
BTQ-PLT-BRN-2019Stainless SteelBrown Sunburst22mmCompatible
BTQ-PF-PURP-2021Stainless SteelPurple20mmCompatible
BTQ-ING-TURQ-2023Stainless SteelTurquoise20mmCompatible
BTQ-AQT-ORG-2017Stainless SteelOrange22mmCompatible
Calibre
18mm10 refs+
ReferenceMaterialDialLugSmartlet
IWC-402-1960Stainless SteelSilver18mmCompatible
IWC-403-1962Stainless SteelWhite18mmCompatible
IWC-852-1952Stainless SteelSilver18mmCompatible
IWC-853-1958Stainless SteelBlack18mmCompatible
IWC-8541B-1967Stainless SteelSilver18mmCompatible
IWC-8541B-1967Stainless SteelSilver18mmCompatible
IWC-C89-1948Stainless SteelSilver18mmCompatible
IWC-89-1952Stainless SteelSilver18mmCompatible
IWC-C89-BLK-1955Stainless SteelBlack18mmCompatible
IWC-89-BLK-1955Stainless SteelBlack18mmCompatible
Da
18mm / 20mm / 22mm16 refs+
ReferenceMaterialDialLugSmartlet
IW37500118K Yellow GoldWhite20mmCompatible
IW37500118K Yellow GoldWhite20mmCompatible
IW39310118K Red GoldSilver22mmCompatible
DaV-Q-1977Stainless SteelSilver18mmCompatible
DaV-1977Stainless SteelSilver18mmCompatible
IW3750-002Stainless SteelWhite20mmCompatible
IW376601Ceramic BlackBlack22mmCompatible
IW376204Stainless SteelSilver22mmCompatible
IW458307Stainless SteelSilver18mmCompatible
IW356602Stainless SteelBlue20mmCompatible
IW356601Stainless SteelSilver20mmCompatible
IW393402Stainless SteelBlue22mmCompatible
IW459306Stainless SteelWhite Mop18mmCompatible
IW459308Stainless SteelWhite Mop18mmCompatible
IW392101Stainless SteelSilver20mmCompatible
IW458312Stainless SteelWhite Lacquer18mmCompatible
F.A.
22mm1 refs+
ReferenceMaterialDialLugSmartlet
IW544201Stainless SteelWhite Enamel22mmCompatible
Flieger
18mm2 refs+
ReferenceMaterialDialLugSmartlet
FLIEGER-1955Stainless SteelBlack18mmCompatible
F-1964Stainless SteelBlack18mmCompatible
IWC
18mm / 22mm4 refs+
ReferenceMaterialDialLugSmartlet
Jumbo-1974Stainless SteelSilver22mmCompatible
852-1960Stainless SteelSilver18mmCompatible
Dress-18k-197218K Yellow GoldChampagne18mmCompatible
SLIM-1963Stainless SteelSilver18mmCompatible
Ingenieur
18mm / 20mm / 22mm13 refs+
ReferenceMaterialDialLugSmartlet
IW322701Stainless SteelBlack22mmCompatible
IW323607TitaniumGrey22mmCompatible
IW323902Stainless SteelSilver20mmCompatible
IW3536-002TitaniumGrey20mmCompatible
IW328904Stainless SteelAqua Blue20mmCompatible
IW322701TitaniumGrey22mmCompatible
IW3508Stainless SteelBlack18mmCompatible
666A-1955Stainless SteelSilver18mmCompatible
666AD-1958Stainless SteelSilver18mmCompatible
866-1967Stainless SteelSilver18mmCompatible
IW328901Stainless SteelBlack20mmCompatible
IW328901Stainless SteelBlack20mmCompatible
IW328904Stainless SteelAqua Blue20mmCompatible
JDM
20mm4 refs+
ReferenceMaterialDialLugSmartlet
JDM-ING40-AQUA-2023Stainless SteelAqua Blue20mmCompatible
JDM-MK18-WHT-2018Stainless SteelWhite20mmCompatible
JDM-IW3713-BLUEStainless SteelBlue Sunburst20mmCompatible
JDM-PF-GRN-2020Stainless SteelGreen20mmCompatible
Japan
22mm1 refs+
ReferenceMaterialDialLugSmartlet
BTQ-BP-BLUE-2019Stainless SteelBlue22mmCompatible
Laureus
20mm / 22mm3 refs+
ReferenceMaterialDialLugSmartlet
IW501012Stainless SteelBlue Laureus22mmCompatible
IW371615Stainless SteelBlue Laureus20mmCompatible
IW371491Stainless SteelBlue Laureus20mmCompatible
Mark
18mm / 19mm / 20mm / 21mm11 refs+
ReferenceMaterialDialLugSmartlet
MARK9-1935Stainless SteelBlack18mmCompatible
MARK10-1944Stainless SteelBlack18mmCompatible
MARK11-RAF-1948Stainless SteelBlack18mmCompatible
JUB-MKXII-1993Stainless SteelSilver18mmCompatible
IW325301Stainless SteelBlack19mmCompatible
IW325501Stainless SteelBlack20mmCompatible
IW326501Stainless SteelBlack21mmCompatible
IW327009Stainless SteelBlack20mmCompatible
IW327012Stainless SteelWhite20mmCompatible
IW328201Stainless SteelBlack20mmCompatible
IW328203Stainless SteelBlue20mmCompatible
Miramar
20mm / 22mm2 refs+
ReferenceMaterialDialLugSmartlet
IW324702Ceramic GreyAnthracite20mmCompatible
IW389002Ceramic GreyAnthracite22mmCompatible
Pallweber
22mm6 refs+
ReferenceMaterialDialLugSmartlet
IW505001PlatinumWhite Lacquer22mmCompatible
IW505001PlatinumWhite Lacquer22mmCompatible
IW50500218K Red GoldWhite Lacquer22mmCompatible
IW50500218K Red GoldWhite Lacquer22mmCompatible
IW505003Stainless SteelBlue Lacquer22mmCompatible
IW505003Stainless SteelBlue Lacquer22mmCompatible
Pilot
18mm / 20mm / 21mm / 22mm23 refs+
ReferenceMaterialDialLugSmartlet
6540-1955Stainless SteelBlack18mmCompatible
807A-1961Stainless SteelBlack18mmCompatible
IW387902BronzeGreen20mmCompatible
IW3705-03Ceramic BlackBlack20mmCompatible
IW3706-01Stainless SteelBlack20mmCompatible
IW377709Stainless SteelBlack21mmCompatible
IW377717Stainless SteelBlue21mmCompatible
IW378901Stainless SteelBlack21mmCompatible
IW387901Stainless SteelBlack20mmCompatible
IW389101Ceramic BlackBlack22mmCompatible
IW389103Ceramic SandBeige22mmCompatible
IW388102Stainless SteelBlue20mmCompatible
IW389105Ceramic WhiteWhite22mmCompatible
IW389106Ceramic GreenGreen22mmCompatible
IW378003Stainless SteelWhite/Black Panda20mmCompatible
IW326506Stainless SteelBlue20mmCompatible
MkX-1944Stainless SteelBlack18mmCompatible
MarkXI-1948Stainless SteelBlack18mmCompatible
IW387902BronzeGreen20mmCompatible
IW50360118K Red GoldGreen22mmCompatible
IW371807Stainless SteelBlue22mmCompatible
IW377714Stainless SteelBlue21mmCompatible
IW327010Stainless SteelBlue20mmCompatible
Porsche
20mm / 22mm7 refs+
ReferenceMaterialDialLugSmartlet
IW3510TitaniumBlack22mmCompatible
BUND-OCEAN-1982TitaniumGrey20mmCompatible
IW3700TitaniumGrey20mmCompatible
IW3702TitaniumBlack20mmCompatible
IW3500TitaniumGrey20mmCompatible
IW3723TitaniumBlack22mmCompatible
IW3538TitaniumGrey20mmCompatible
Portofino
18mm / 20mm / 22mm18 refs+
ReferenceMaterialDialLugSmartlet
IW45811618K Red GoldWhite Mop18mmCompatible
Port-1984Stainless SteelSilver18mmCompatible
IW356502Stainless SteelBlack20mmCompatible
IW356501Stainless SteelSilver20mmCompatible
IW356518Stainless SteelBlue20mmCompatible
IW391030Stainless SteelBlue20mmCompatible
IW391027Stainless SteelSilver20mmCompatible
IW391502Stainless SteelGreen20mmCompatible
IW51640118K Red GoldSilver22mmCompatible
IW510104Stainless SteelSilver22mmCompatible
IW510106Stainless SteelBlue22mmCompatible
IW510106Stainless SteelSilver22mmCompatible
IW510705Stainless SteelBlue Laureus22mmCompatible
IW459001Stainless SteelWhite18mmCompatible
IW459001Stainless SteelWhite18mmCompatible
IW516401Red GoldSilver22mmCompatible
PF-1965Stainless SteelSilver18mmCompatible
Port-1965Stainless SteelSilver18mmCompatible
Portugieser
18mm / 20mm / 22mm20 refs+
ReferenceMaterialDialLugSmartlet
IW371601Stainless SteelBlue Lacquer20mmCompatible
IW371602Stainless SteelWhite Lacquer20mmCompatible
325-1954Stainless SteelSilver18mmCompatible
IW371401Stainless SteelSilver20mmCompatible
IW371417Stainless SteelBlue20mmCompatible
IW503501Stainless SteelSilver22mmCompatible
IW500703Stainless SteelBlack22mmCompatible
IW500710Stainless SteelBlue22mmCompatible
IW500705Stainless SteelSilver22mmCompatible
IW371601Stainless SteelBlue Lacquer20mmCompatible
IW371602Stainless SteelWhite Lacquer20mmCompatible
IW371606Stainless SteelBlue20mmCompatible
IW371605Stainless SteelWhite20mmCompatible
IW371614Stainless SteelWhite/Black Panda20mmCompatible
IW544101Stainless SteelWhite Enamel22mmCompatible
IW50340618K Red GoldBlue Lacquer22mmCompatible
IW50330218K Red GoldSilver22mmCompatible
IW50450118K Red GoldWhite Lacquer22mmCompatible
IW50440118K Red GoldSilver22mmCompatible
IW390503Stainless SteelBlue22mmCompatible
Prototype
21mm / 22mm / 24mm5 refs+
ReferenceMaterialDialLugSmartlet
PROTO-AQT3000-2010SteelBlack24mmCompatible
PROTO-CER-2008CeramicBlack22mmCompatible
PROTO-ING-CER-2015CeramicBlack22mmCompatible
PROTO-PALL-2016SteelWhite22mmCompatible
PROTO-IW5000-2000Stainless SteelSilver21mmCompatible
RAAF
18mm1 refs+
ReferenceMaterialDialLugSmartlet
RAAF-1955-IWCStainless SteelBlack18mmCompatible
Spitfire
20mm / 22mm8 refs+
ReferenceMaterialDialLugSmartlet
IW326802BronzeGreen20mmCompatible
IW326801Stainless SteelGreen20mmCompatible
IW387902BronzeGreen20mmCompatible
IW387901Stainless SteelBlack20mmCompatible
IW503601BronzeGreen22mmCompatible
IW395501Stainless SteelBlack22mmCompatible
IW32510318K Yellow GoldSilver20mmCompatible
IW325101Stainless SteelBlack20mmCompatible
Top
20mm / 22mm10 refs+
ReferenceMaterialDialLugSmartlet
IW324702Ceramic GreyAnthracite20mmCompatible
IW389002Ceramic GreyAnthracite22mmCompatible
IW389103CeramicSand22mmCompatible
IW371815CerataniumBlack22mmCompatible
IW371815CerataniumBlack22mmCompatible
IW503004Ceramic BlackBlack22mmCompatible
IW503001Ceramic SandBeige22mmCompatible
IW379901Ceramic BlackBlack22mmCompatible
IW328101Ceramic WhiteWhite20mmCompatible
IW328205Ceramic GreenGreen20mmCompatible
Vietnam
18mm1 refs+
ReferenceMaterialDialLugSmartlet
VN-SOG-1967-IWCStainless SteelBlack18mmCompatible

IWC lug widths:

18mm20mm21mm22mm
Frequently paired

Smartwatches worn with IWC

The most common combinations our customers wear. Find your mechanical watch and discover the right Smartlet edition.

Apple Watch
Series 0 to Ultra 3
Whoop
5.0 / MG
Garmin Forerunner
255 to 965
Samsung Galaxy Watch
Series 4 to 7
Withings ScanWatch
Light / 2 / Nova
View all brands
27 brands covered
Also compatible

Other brands

Smartlet One covers 18mm to 24mm lug widths across the finest watch brands.

Rolex
Omega
Tag Heuer
Breitling
Tudor
Longines
Seiko
Hamilton
Grand Seiko
Bell&Ross
Blancpain
Panerai
Cartier
Jaeger Lecoultre
Zenith
Rado
Tissot
Oris
Doxa
Formex
Timex
Sinn
Porsche Design
Mido
Yema
Christopher Ward
View all
Watch brand compatibility guide

Step by step

Replace your strap
01

Replace your strap

Smartlet replaces your mechanical watch strap via the standard spring-bar system. Classic, Shadow, or Titanium. No tools required.

Connect your wearable
02

Connect your wearable

Smartlet uses a dedicated adapter or native lug pins depending on your smartwatch. The connector snaps onto the Smartlet module. Zero modification to the mechanical watch.

Wear both simultaneously
03

Wear both simultaneously

Both watches sit on the same wrist. All smartwatch sensors maintain direct skin contact and operate normally.

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.
  • Which recent IWC releases work with Smartlet?
    IWC's 2026 novelties include a Pilot's Watch engineered for space travel and the Perpetual Calendar Proset, one of the year's notable mechanical innovations, following the 2025 expansion of the Ingenieur line. Ingenieur models use an integrated bracelet; Pilot, Portugieser, Portofino and Aquatimer references with standard spring bars between 18mm and 24mm work with Smartlet.
  • Does Smartlet damage or modify my mechanical watch?
    No. Smartlet replaces your standard watch strap using the existing spring-bar system. It makes no permanent modification to the watch case, lugs, or dial. The process is fully reversible in seconds. Your mechanical watch is unaffected and can be worn independently at any time by reinstalling its original strap. Smartlet is engineered to watchmaker tolerances and tested with the same care that goes into the watches it pairs with.