Which smartwatch generating iBeacon

I would like to buy a smartwatch that generate iBeacon to use it to track my room presence through ESPresense, any low cost suggestion?

late but here are my results.
I have an Garmin Epix (gen 2) other Models work similar.
It does not have an iBeacon but can be tacked with espresence and in configuration.yaml

  - platform: mqtt_room
    device_id: garmin:*ID*
    name: "Epix"

But an smartwatch connected to the phone don’t transmit the advertisement. You must disable Bluetooth on your phone then the watch is “visible”

here i found an old statement from Garmin

Hope that helps