Wear a smartwatch with your Blancpain Fifty Fathoms

Wear a smartwatch with your Blancpain Fifty Fathoms

Smartlet is compatible with the Blancpain Fifty Fathoms. All references use 23mm lugs, 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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Blancpain Fifty Fathoms compatibility

Wear a smartwatch with your Blancpain Fifty Fathoms

In short Smartlet is compatible with the Blancpain Fifty Fathoms. All references use 23mm lugs, natively supported with no adapter. Installation uses the standard spring-bar system - no modification to the watch, fully reversible in seconds.

Smartlet is compatible with the Blancpain Fifty Fathoms. All references use 23mm lugs, natively supported with no adapter. Installation uses the standard spring-bar system - no modification to the watch, fully reversible in seconds.

Wear yours How it works
The problem
Choosing between health data and horological heritage every morning.
The solution
Smartlet One replaces your Blancpain Fifty Fathoms'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
Blancpain Fifty Fathoms
Lug width
23mm
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 (14)

Stealth. Switch in seconds, leave no trace.

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

Blancpain Fifty Fathoms models supported

Covered references

20 references covered.

ReferenceMaterialDialLugSmartlet
5015-12B40-O52ATitanium 45mmGrey23mmPre-order
5066F-1210-B52ATitanium 45mmBlack Gmt23mmPre-order
5010-BLU-2024Titanium Blue 45mmBlue Sunburst21mmCompatible
5085F-1140-52Titanium 45mmBlack23mmPre-order
5015-3630-52A18K Red Gold 45mmBlack23mmPre-order
5015-11C30-52Black Ceramic 45mmBlack23mmPre-order
5085F-1230-52ATitanium 45mmGrey23mmPre-order
5015-12C30-52BBlue Ceramic 45mmBlue23mmPre-order
5015-12B30-B52ATitanium 45mmGrey23mmPre-order
5015-12OW-52Titanium 45mmOrange23mmPre-order
5015-12B30-52Titanium 45mmBlack23mmPre-order
5050-12B30-B52ATitanium 45mmBlue23mmPre-order
5015-12B40-52Titanium 45mmBlue23mmPre-order
5015-12B40-O52ATitanium 45mmDeep Black23mmPre-order
5015-12O40-O52ATitanium 45mmBlack/Orange23mmPre-order
5050-12B30-98BTitanium 45mmBlue23mmPre-order
50015-12B30-98Titanium 45mmBlack23mmPre-order
5010-12B30-T3-2024Titanium Grade 23 45mmCharcoal Grey21mmCompatible
FF-USN-1965Steel 45mmBlack Usn20mmCompatible
FF-BUND-1968-TRIBSteel 45mmBlack Military20mmCompatible

Blancpain Fifty Fathoms lug widths: 20mm / 21mm / 23mm

Frequently paired

Smartwatches worn with Blancpain Fifty Fathoms

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

Other iconic models in the Smartlet compatibility library.

Submariner
Daytona
GMT-Master
Datejust
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
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

  • Is Smartlet compatible with the Blancpain Fifty Fathoms?
    Yes. All Fifty Fathoms references use 23mm lugs - natively supported by Smartlet. No adapter required. The Cal. 1315 movement and case seals are completely unaffected.
  • Does Smartlet affect the Fifty Fathoms water resistance?
    No. Smartlet uses the same spring-bar attachment as any strap change. The crown tube and case seals are not touched. 300m water resistance is maintained.
  • Can I pair the Fifty Fathoms with an Apple Watch using Smartlet?
    Yes. Smartlet positions your Apple Watch on the same strap as the Fifty Fathoms. Both run simultaneously. All sensors remain operational.
  • Does Smartlet work with the Blancpain Fifty Fathoms?
    Yes. The Fifty Fathoms uses 23mm lugs, natively supported by Smartlet. No adapter required.
  • 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.