Tudor Monarch & Apple Watch on the same wrist

Tudor Monarch & Apple Watch on the same wrist

Yes. Despite its integrated look, the Tudor Monarch uses standard spring bars in 20mm lugs, so it fits Smartlet One on 20mm watch adapters. The Monarch sits on top of the wrist; the Apple Watch sits underneath, against the skin, with the Apple Watch adapters in the box.
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Compatibility guide

Tudor Monarch & Apple Watch on the same wrist

Tudor Monarch + Apple Watch
Yes. Despite its integrated look, the Tudor Monarch uses standard spring bars in 20mm lugs, so it fits Smartlet One on 20mm watch adapters. The Monarch sits on top of the wrist; the Apple Watch sits underneath, against the skin, with the Apple Watch adapters in the box.
Tudor Monarch lug width
20mm
Apple Watch compatibility
Series 0 to Ultra 4
Adapter
Apple Watch adapters in the box
Sensor position
Underneath the wrist

Why early adopters pair the Tudor Monarch with Apple Watch

Is the Tudor Monarch compatible with Apple Watch on Smartlet?

Compatible
Yes. Despite its integrated look, the Tudor Monarch uses standard spring bars in 20mm lugs, so it fits Smartlet One on 20mm watch adapters. The Monarch sits on top of the wrist; the Apple Watch sits underneath, against the skin, with the Apple Watch adapters in the box.
Tudor Monarch lug width
20mm Supported
Watch adapters in the lug holes
Apple Watch model
Series 0 to Ultra 4
Apple Watch adapters in the box
Sensor position
Underneath the wrist
Against the skin
Reversible
Fully
No modification to the watch

Related compatibility guides

Model guide
Tudor Monarch
→
Brand guide
All Tudor models
→
Smartwatch guide
Apple Watch compatibility
→

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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.

Questions

Frequently asked questions

  • Is the Monarch's bracelet really removable for Smartlet?
    Yes. The H-link bracelet attaches with standard spring bars; the vertical lines running to the lugs are decorative engravings on the case. Smartlet One replaces the bracelet with watch adapters in place of the spring bars, and the change is fully reversible.
  • Which Monarch references are compatible?
    The Monarch, launched in 2026, is listed in our base as one reference, M2639W1A0U-0001 with a champagne dial. It fits Smartlet One on 20mm lugs with standard spring bars.
  • Will Smartlet mark the Monarch's faceted case?
    No. The watch adapters seat in the lug holes, exactly where the original bracelet attaches, and nothing is modified on the case.
  • Does Smartlet damage or modify my mechanical watch?
    No. The watch adapters seat in your watch's lug holes in place of the spring bars. Nothing is modified on the case, lugs or dial, and the change is fully reversible: your mechanical watch can go back on its original strap at any time.