Wear a smartwatch with your Rolex Datejust 41

Wear a smartwatch with your Rolex Datejust 41

Smartlet is compatible with the Rolex Datejust 41. Lug width: 21mm - natively supported with no adapter. Installation uses the standard spring-bar system. No modification to the watch required. Fully reversible in seconds.
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Rolex Datejust 41 compatibility

Wear a smartwatch with your Rolex Datejust 41

In short Smartlet is compatible with the Rolex Datejust 41. Lug width: 21mm - natively supported with no adapter. Installation uses the standard spring-bar system. No modification to the watch required. Fully reversible in seconds.

The Datejust is the most recognisable dress watch in the world. The 41mm case modernised a classic without changing its essential character the cyclops lens, the fluted bezel, the Jubilee bracelet. Both watches coexist. Neither compromises the other.

Wear yours How it works
The problem
Choosing between health data and horological heritage every morning.
The solution
Smartlet One replaces your Rolex Datejust 41'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.
Model
Rolex Datejust 41
Lug width
21mm
References
20covered
Reversible
In seconds

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 (17)

Stealth. Switch in seconds, leave no trace.

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

Rolex Datejust 41 models supported

Covered references

20 references covered.

ReferenceMaterialDialLugSmartlet
126333-CH-JUBSteel/Gold 41mmChampagne21mmCompatible
126300904L stainless steel 41mmBlue21mmCompatible
126300-BKSteel 41mmBlack21mmCompatible
126300-BK-OYSSteel 41mmBlack21mmCompatible
126300-BL-OYSSteel 41mmBlue21mmCompatible
126300-RHDSteel 41mmRhodium21mmCompatible
126300-SLSteel 41mmSilver21mmCompatible
126331-SLSteel/Rg 41mmSlate21mmCompatible
126334-SL-RM-JUBSteel/Wg 41mmSlate21mmCompatible
126334-BL-JUBSteel/White Gold 41mmBlue21mmCompatible
126334-WIMBSteel/White Gold 41mmSlate/Green21mmCompatible
126300-SLTDSteel 41mmSlate/Green21mmCompatible
126333-PALM-GLDSteel/Gold 41mmGold Palm21mmCompatible
126334-AZZSteel/Wg 41mmBlue21mmCompatible
126334-BKMOT-JUBSteel/Wg 41mmBlack Motif21mmCompatible
126334-FLT-SLSteel/Wg 41mmSilver Fluted21mmCompatible
126334-GRN-MOTSteel/Wg 41mmGreen Motif21mmCompatible
126334-SL-MOTSteel/Wg 41mmSilver Motif21mmCompatible
126334-MNT-JUBSteel/Wg 41mmMint Green21mmCompatible
126334-OLVSteel/Wg 41mmOlive21mmCompatible

Rolex Datejust 41 lug widths: 21mm

The Datejust is the most recognisable dress watch in the world. The 41mm case modernised a classic without changing its essential character the cyclops lens, the fluted bezel, the Jubilee bracelet. Both watches coexist. Neither compromises the other.
Frequently paired

Smartwatches worn with Rolex Datejust 41

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
Combination guides

Wear it both ways

Rolex Datejust 41 + Apple Watch
Apple Watch
→
Rolex Datejust 41 + Fitbit Air
Fitbit Air
→
Also compatible

Other brands

Other iconic models in the Smartlet compatibility library.

Submariner
Daytona
GMT-Master
Yacht-Master
Sky-Dweller
Explorer
Seamaster 300m
Speedmaster
Planet Ocean
Constellation
De Ville
Monaco
Carrera
Formula 1
Aquaracer
Portugieser
Navitimer
Superocean
Avenger
Black Bay
Pelagos
Ranger
Luminor
Radiomir
Submersible
SKX
Prospex
Presage
Khaki Field
BR 03-92
Fifty Fathoms
Reverso
SUB 300
Spring Drive
Essence Leggera
Aquis
Divers Sixty-Five
Chronograph 1
Captain Cook
Superman Heritage
El Primero
Monarch
Black Bay 58 GMT
View all models
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 the Rolex Datejust 41?
    Yes. The Rolex Datejust 41 uses a 21mm lug width and is fully compatible with Smartlet. Smartlet replaces the standard strap via the spring-bar system. No modification to the watch is required. The setup is fully reversible.
  • Will Smartlet scratch or damage my Rolex Datejust 41?
    No. Smartlet replaces the strap only and makes no contact with the Rolex Datejust 41 case or crystal. All contact points are non-abrasive. The system is fully reversible and leaves no trace on the watch.
  • Which smartwatches can I wear with my Rolex Datejust 41?
    Smartlet is compatible with Apple Watch, Samsung Galaxy Watch, Garmin Forerunner, Garmin Venu, Google Pixel Watch, Polar Vantage, Fitbit Charge, Huawei Watch GT, Withings ScanWatch, Coros, Suunto, and Whoop. The Rolex Datejust 41 with its 21mm lug width is compatible with the full Smartlet range.
  • Where can I buy Smartlet for the Rolex Datejust 41?
    Smartlet is available at smartlet.io in Classic, Shadow, and Titanium finishes. Compatible with the Rolex Datejust 41 and its 21mm lug width. No additional accessory required for standard lug widths between 18mm and 24mm.
  • 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.