Apple Watch & Fitbit Air on the same wrist

Apple Watch & Fitbit Air on the same wrist

The Apple Watch fits Smartlet One today, attaching with the Apple Watch adapters in the box. Fitbit Air support is coming soon, with a dedicated adapter. Once available, one strap carries both, one on top of the wrist and the other underneath.
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Compatibility guide

Apple Watch & Fitbit Air on the same wrist

Apple Watch + Fitbit Air
The Apple Watch fits Smartlet One today, attaching with the Apple Watch adapters in the box. Fitbit Air support is coming soon, with a dedicated adapter. Once available, one strap carries both, one on top of the wrist and the other underneath.
Apple Watch
Apple Watch adapters in the box
Fitbit Air
Screenless tracker (2026)
Adapters
One per device
Position
One on top, one underneath

Why everyday trackers pair Apple Watch with Fitbit Air

The Fitbit Air went screenless on purpose, quiet tracking that gets out of the way. The Apple Watch brings the screen and the ecosystem.

Together they cover both ends, which is exactly why people wear them at once. Smartlet puts both on a single wrist instead of two stacked bands.

Can you wear an Apple Watch and a Fitbit Air together on Smartlet?

Compatible
The Apple Watch fits Smartlet One today, attaching with the Apple Watch adapters in the box. Fitbit Air support is coming soon, with a dedicated adapter. Once available, one strap carries both, one on top of the wrist and the other underneath.
Apple Watch
Outer wrist
Apple Watch adapters in the box
Fitbit Air
Inner wrist
Dedicated Fitbit Air adapter, coming soon
Sensors
Not certified in this position
By neither manufacturer
Reversible
Fully
No modification

Related compatibility guides

Smartwatch guide
Apple Watch
→
Smartwatch guide
Fitbit Air
→
Use case
More than one wearable
→

More ways to wear Smartlet

Apple Watch + Whoop
Whoop
→
Apple Watch + Galaxy Watch
Samsung Galaxy Watch
→
Rolex Datejust + Fitbit Air
Rolex Datejust
→

Choose your Smartlet

Step by step

Replace your strap
01

Replace your strap

The watch adapters seat in your mechanical watch's lug holes in place of the spring bars. Classic, Shadow or Titanium. The spring bar tool is in the box.

Connect your wearable
02

Connect your wearable

Your smartwatch attaches to the central part of the bracelet with its own adapter (Apple Watch, Whoop, Fitbit, Galaxy or Pixel Watch) or a pair of standard watch adapters. Zero modification to the mechanical watch.

Wear both simultaneously
03

Wear both simultaneously

Both watches sit on the same wrist. The smartwatch sits underneath, against the skin; readings taken there are not certified by its manufacturer.

Questions

Frequently asked questions

  • Can I wear an Apple Watch and a Fitbit Air together with Smartlet?
    Soon. The Apple Watch fits Smartlet One today; Fitbit Air support is coming soon, with a dedicated adapter. Once available, one strap carries both on a single wrist.
  • Does the Fitbit Air keep tracking when mounted on Smartlet?
    That is what its dedicated adapter, coming soon, is designed for: it will hold the Air underneath the wrist, against the skin. Google does not certify readings taken in this position.
  • Do I lose Apple Watch features by adding a Fitbit Air?
    No. The Apple Watch works exactly as it does on its own strap.
  • Is Smartlet reversible?
    Yes. Remove either device and return to a single wearable any time.