Wear your Garmin Fenix with your mechanical watch | Smartlet
Wear your Garmin Fenix
and your mechanical watch
at the same time
Garmin Fenix is the benchmark multi-sport GPS watch - VO2 max, body battery, multi-band GPS, topographic maps. Your Rolex Submariner or Omega Seamaster carries a different kind of precision. Smartlet One clips your Garmin Fenix onto any mechanical watch strap via a 20mm adapter, letting both watches coexist on the same wrist. Note: Fenix 6X, 7X, and 8 AMOLED 51mm use a 26mm lug width and are not compatible with Smartlet.
How it works
Classic, Shadow, or Titanium. Match your mechanical watch case material and aesthetic. No tools required at this stage.
Attach the Smartlet adapter to your watch lugs. The spring-loaded mechanism locks in place with zero metal-to-metal case contact. Fully reversible in seconds.
Attach the Smartlet adapter to your Garmin Fenix. It locks securely. Both watches sit on the same wrist. All sensors remain in contact with your skin.
Garmin Fenix models supported
| Series | Smartlet compatible | Lug width | Release year | Case size |
|---|---|---|---|---|
| Fenix 6S | Compatible | 20 mm | 2019 | 42mm |
| Fenix 6 | Compatible | 22 mm | 2019 | 47mm |
| Fenix 6X | Not supported | Not compatible | 2019 | 51mm |
| Fenix 7S | Compatible | 20 mm | 2022 | 42mm |
| Fenix 7 | Compatible | 22 mm | 2022 | 47mm |
| Fenix 7X | Not supported | Not compatible | 2022 | 51mm |
| Fenix 8 AMOLED 47mm | Compatible | 22 mm | 2024 | 47mm |
| Fenix 8 AMOLED 51mm | Not supported | Not compatible | 2024 | 51mm |
Mechanical watches worn with Garmin Fenix
Other smartwatches
Frequently asked
Can I wear a Garmin Fenix and a mechanical watch at the same time?
Yes. Smartlet One is a modular adapter that clips onto any mechanical watch via an 18mm to 24mm adapter, allowing you to simultaneously wear your Garmin Fenix on the same wrist. Both watches operate independently. No modification required.
Which Garmin Fenix models are compatible with Smartlet?
Garmin Fenix 6, 7, and 8 series are compatible with Smartlet, except for the 51mm variants (Fenix 6X, 7X, 8 AMOLED 51mm) which use a 26mm lug width and are not compatible. The Fenix 6S and 7S (42mm case) use 20mm lugs, the standard Fenix 6, 7, 8 (47mm) use 22mm lugs. All compatible models have full sensor operation.
Will Garmin Fenix sensors still work when attached to Smartlet?
Yes. Garmin Fenix sensors including Pulse Ox SpO2, optical heart rate, stress, body battery, and VO2 max all require wrist contact, which Smartlet maintains. GPS, altimeter, barometer, and compass are hardware-based and completely unaffected by the mounting.
Does Smartlet work with Garmin Fenix 7X Solar?
Yes. The Fenix 7X Solar uses a 22mm lug width and is fully compatible with Smartlet. The Fenix 6X, 7X, and 8 AMOLED 51mm use 26mm lugs and are not compatible with Smartlet.