Unlock full compatibility across your watch collection and get one free watch adapter.
The Smartlet One Universal Fit Kit includes the full range of Smartlet connectors from 18 mm to 24 mm, so your Smartlet setup can adapt to virtually any lug width in seconds. Whether you rotate between different mechanical watches, switch styles often, or want one future-proof solution as your collection evolves, this kit keeps you ready.
What it enables:
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Fit multiple lug widths (18, 19, 20, 21, 22, 24 mm) with one ecosystem
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Swap watches quickly without changing your Smartlet setup
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Upgrade over time as you add new pieces to your collection
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Reduce friction: one kit, total compatibility
Built with the same Smartlet standards for precision, symmetry, and reliability, the Complete Fit Kit is the simplest way to make Smartlet truly universal on your wrist.
Compatibility
Works with your watches & smartwatches
Smartlet uses a universal adapter compatible with most metal watches and leading smartwatches. The examples below are a selection — see the full compatibility guide for the complete list.
Classic watches — examples
- Rolex 18, 19, 20, 21, 22mm
- Omega 18, 19, 20, 21, 22mm
- Tudor 18, 19, 20, 22mm
- TAG Heuer 18, 20, 21, 22mm
- Breitling 20, 22, 24mm
- Seiko 19, 20, 21, 22mm
- IWC 18, 20, 21, 22mm
- Longines 18, 19, 20, 21, 22mm
- Hamilton 20, 22, 24mm
- Grand Seiko 18, 19, 20, 21, 22mm
- Panerai 22, 24mm
- Cartier 18, 19, 20, 21, 22, 23, 24mm
- Tissot 18, 19, 20, 21, 22mm
- Oris 18, 19, 20, 21, 22, 24mm
- Christopher Ward 18, 19, 20, 21, 22mm
Smartwatches & fitness trackers — examples
- Apple Watch Series 0 to Ultra 3
- Samsung Galaxy Watch 4, 5, 6, 7
- Garmin Forerunner 255, 265, 955, 965
- Polar Vantage M2, V2, V3
- Google Pixel Watch 1, 2, 3
- Huawei Watch GT GT 3, GT 4, GT 5
- Fitbit Charge 5, 6
- Whoop 5.0, MG
- Garmin Venu 2, 3, Sq 2
- Withings ScanWatch ScanWatch, 2, Light, Nova
- Coros Apex 2, Pace 3, Vertix 2
Wear it your way
Designed to be intuitive, your Smartlet is ready to wear in moments. Discover how to pair it with your favorite watches and smartwatches.
Technical specifications
What's in the box?
Smartlet includes
- 2 x standard watch connectors (from 18 mm - to 24 mm lug width watch)
- 2 x bracelet sides (mounted with 5 links)
- 4 x additional links for size adjustments (with screws)
- 1 x standard Clasp
- 1 x Smartlet tool ( bracelet removal system)
- 1 x Screwdriver
For the smartwatch / fitness tracker connector (depending on the version selected)
- 2 x standard watch connectors (from 18 mm to 24 mm lug width watch)
- 2x adapters for Apple watch (38/41mm and 42/44/45/49mm)
- 2x adapters for Fitbit Charge 5/6
- 1x adapter for Whoop 5.0 / MG
Smartlet doesn't include any classic watch, smartwatch or fitness tracker, they need to be bought separately.
Dimensions
Material: Stainless steel SS316L or Titanium Grade 2
Weight: between 60 g and 100 g (including connected device)
Height: between 9 mm and 12 mm on the wrist back (including connected device)
Width: between 18,5 mm and 36 mm (including connected device)
As a benchmark, standard stainless steel bracelet on the market specifications:
- Weight: between 60 g and 100 g (same as Smartlet with connected device)
- Height: between 4 mm and 8 mm on the wrist back
- Width: between 18 mm and 22 mm
Smartlet One
The freedom to wear all your watches on one wrist
Preview your unboxing experience
Standard packaging
Smartlet Accessories
DiscoverThe gift of choice
A Smartlet gift card lets them pick the perfect match for their favorite timepiece.
