Wear your Samsung Galaxy Watch with your mechanical watch | Smartlet
Wear your Samsung Galaxy Watch
and your mechanical watch
at the same time
Samsung Galaxy Watch delivers ECG, body composition analysis, SpO2, and advanced sleep tracking - a genuine health platform worn daily. Pairing it with your Rolex, Omega, or Seiko no longer means choosing one over the other. Smartlet One clips your Galaxy Watch onto any mechanical watch strap via a 20mm adapter. Both watches sit on the same wrist, operating independently. All Galaxy Watch sensors maintain full skin contact for accurate readings.
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 Samsung Galaxy Watch. It locks securely. Both watches sit on the same wrist. All sensors remain in contact with your skin.
Samsung Galaxy Watch models supported
| Series | Smartlet compatible | Lug width | Release year | Case size |
|---|---|---|---|---|
| Galaxy Watch 4 40mm | Compatible | Full compatibility | 2021 | 40mm |
| Galaxy Watch 4 44mm | Compatible | Full compatibility | 2021 | 44mm |
| Galaxy Watch 4 Classic | Compatible | 20mm | 2021 | 42mm / 46mm |
| Galaxy Watch 5 40mm | Compatible | Full compatibility | 2022 | 40mm |
| Galaxy Watch 5 44mm | Compatible | Full compatibility | 2022 | 44mm |
| Galaxy Watch 5 Pro | Compatible | Full compatibility | 2022 | 45mm |
| Galaxy Watch 6 40mm | Compatible | Full compatibility | 2023 | 40mm |
| Galaxy Watch 6 Classic | Compatible | 20mm | 2023 | 43mm / 47mm |
| Galaxy Watch 7 | Compatible | Full compatibility | 2024 | 40mm / 44mm |
| Galaxy Watch Ultra | Compatible | 22mm | 2024 | 47mm |
Mechanical watches worn with Samsung Galaxy Watch
Other smartwatches
Frequently asked
Can I wear a Samsung Galaxy Watch 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 Samsung Galaxy Watch on the same wrist. Both watches operate independently. No modification required.
Which Samsung Galaxy Watch models are compatible with Smartlet?
All Samsung Galaxy Watch models from Galaxy Watch 4 onwards are compatible with Smartlet, covering Galaxy Watch 4, 4 Classic, 5, 5 Pro, 6, 6 Classic, 7, and Ultra. Earlier Gear S models use proprietary bands and are not supported.
Will Samsung Galaxy Watch sensors still work when attached to Smartlet?
Yes. All Galaxy Watch sensors including ECG, BIA body composition analysis, SpO2, and optical heart rate remain fully functional. Smartlet positions the watch on the outer face of your strap with consistent skin contact throughout wear.
Does Smartlet work with Samsung Galaxy Watch Ultra?
Yes. The Galaxy Watch Ultra (47mm) is compatible with Smartlet. Its standard 22mm lug width pairs directly with the Smartlet adapter.