Wear a smartwatch with your Cartier Tank

Wear a smartwatch with your Cartier Tank

Smartlet is compatible with the Cartier Tank. Lug width: 18mm / 19mm / 20mm / 21mm / 22mm, supported with watch adapters in the matching width. The watch adapters seat in the lug holes in place of the spring bars. No modification to the watch required. Fully reversible in seconds.
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Cartier Tank compatibility

Wear a smartwatch with your Cartier Tank

In short Smartlet is compatible with the Cartier Tank. Lug width: 18mm / 19mm / 20mm / 21mm / 22mm, supported with watch adapters in the matching width. The watch adapters seat in the lug holes in place of the spring bars. No modification to the watch required. Fully reversible in seconds.

The Tank was designed by Louis Cartier in 1917, the case shape drawn from the caterpillar tracks of Renault tanks advancing across the Western Front. Over a century later, the parallel bars of the case remain one of the most copied forms in design history - and one of the least successfully imitated. The Tank Solo for daily precision. The Tank Américaine for the wrist that needs presence. The Tank Cintrée for those who understand why a curved case changes everything. Smartlet adds connected data without disturbing any of those choices.

Wear yours How it works
The problem
Choosing between health data and horological heritage every morning.
The solution
Smartlet One replaces your Cartier Tank strap: the watch adapters seat in the lug holes in place of the spring bars, and your smartwatch sits on the same wrist. Both watches run simultaneously, with no modification to the watch and full reversibility in seconds.
Model
Cartier Tank
Lug width
18mm / 19mm / 20mm
References
27covered
Reversible
In seconds

Choose your Smartlet

Compatibility

Cartier Tank models supported

Covered references

27 references covered.

ReferenceMaterialDialLugSmartlet
2391Yellow Gold 25mm x 38mmGuilloché Silver20mmCompatible
WGTA0067Rose Gold 31mmSilver19mmCompatible
WSTA0054Steel 25.5mm x 33.7mmBurgundy19mmCompatible
WSTA0055Steel 25.5mm x 33.7mmGreen19mmCompatible
WSTA0056Steel 25.5mm x 33.7mmBlue19mmCompatible
WGTA0110Platinum 25.7mm x 38mmSilver18mmCompatible
WGTA030333.7mmGrey19mmCompatible
246525mmWhite18mmCompatible
W4TA0017Stainless Steel 25.50mmSilver19mmCompatible
WSTA009233.7mmWhite19mmCompatible
WGTA005825.5mmBlue / Navy19mmCompatible
WGTA0092Rose Gold 25.50mmGrey19mmCompatible
WGTA017525.5mmMulti19mmCompatible
WGTA017625.5mmMulti19mmCompatible
WGTA019125.5mmGreen19mmCompatible
WJTA001525.5mmWhite19mmCompatible
HPI0155827.8mmSkeletonised/Openwork19mmCompatible
WGTA010825.7mmWhite18mmCompatible
WHTA002027.8mmSkeletonised/Openwork19mmCompatible
CRWGTA023437.6mmYellow18mmCompatible
CRWGTA023537.6mmNatural/Cream18mmCompatible
CRWGTA023637.6mmGrey18mmCompatible
CRWGTA023737.6mmGrey18mmCompatible
WSTA002827.5mmWhite20mmCompatible
CRWGTA034333.7mmNatural / Cream19mmCompatible
271527mmWhite20mmCompatible
W101835527mmWhite20mmCompatible

Cartier Tank lug widths: 18mm / 19mm / 20mm

The Tank was designed by Louis Cartier in 1917, the case shape drawn from the caterpillar tracks of Renault tanks advancing across the Western Front. Over a century later, the parallel bars of the case remain one of the most copied forms in design history - and one of the least successfully imitated. The Tank Solo for daily precision. The Tank Américaine for the wrist that needs presence. The Tank Cintrée for those who understand why a curved case changes everything. Smartlet adds connected data without disturbing any of those choices. Cartier revived the Tank a Guichets in 2025, the digital-display Tank first introduced in 1928.
Frequently paired

Smartwatches worn with Cartier Tank

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

Apple Watch
Series 0 to Ultra 4
Whoop
5.0 / MG
Garmin Forerunner
255 to 965
Samsung Galaxy Watch
Watch 4 to 9 - Classic - FE - Ultra - Ultra2
Withings ScanWatch
Light / 2 / Nova
View all brands
27 brands covered
Also compatible

Other brands

Other iconic models in the Smartlet compatibility library.

Submariner
Daytona
GMT-Master
Datejust
Yacht-Master
Sky-Dweller
Explorer
Seamaster 300m
Speedmaster
Planet Ocean
De Ville
Monaco
Carrera
Formula 1
Aquaracer
Portugieser
Navitimer
Superocean
Avenger
Black Bay
Pelagos
Ranger
Luminor
Submersible
SKX
Prospex
Presage
Khaki Field
Fifty Fathoms
Reverso
SUB 300
Spring Drive
Divers Sixty-Five
Captain Cook
Superman Heritage
El Primero
Monarch
Black Bay 58 GMT
Rolex Datejust 36
Hamilton Jazzmaster
Longines Master Collection
Blancpain Villeret
View all models
Watch brand compatibility guide

Step by step

Replace your strap
01

Replace your strap

The watch adapters seat in your mechanical watch's lug holes in place of the spring bars. Classic, Shadow or Titanium. The spring bar tool is in the box.

Connect your wearable
02

Connect your wearable

Your smartwatch attaches to the central part of the bracelet with its own adapter (Apple Watch, Whoop, Fitbit, Galaxy or Pixel Watch) or a pair of standard watch adapters. Zero modification to the mechanical watch.

Wear both simultaneously
03

Wear both simultaneously

Both watches sit on the same wrist. The smartwatch sits underneath, against the skin; readings taken there are not certified by its manufacturer.

Questions

Frequently asked questions

  • Is Smartlet compatible with the Cartier Tank?
    Yes. All Tank references use 18mm to 22mm lugs, supported with watch adapters in the matching width. Watch adapters come in the width chosen at order. The case and movement are completely unaffected.
  • Which Cartier Tank models work with Smartlet?
    All of them - Tank Solo, Tank Louis Cartier, Tank Américaine, Tank Cintrée, Tank Française, Tank Basculante. Lug widths from 18mm to 22mm are all within Smartlet's native range.
  • Does Smartlet modify my Cartier Tank?
    No. Smartlet uses the standard spring-bar system. The case, crown, and movement are untouched. Fully reversible in seconds.
  • Where can I buy Smartlet for the Cartier Tank?
    Smartlet is available at smartlet.io in Classic, Shadow, and Titanium. All finishes are compatible with the Cartier Tank family across 18mm to 22mm lug widths.
  • Does Smartlet damage or modify my mechanical watch?
    No. The watch adapters seat in your watch's lug holes in place of the spring bars. Nothing is modified on the case, lugs or dial, and the change is fully reversible: your mechanical watch can go back on its original strap at any time.