Spin bike metrics

I'm not familiar with the G-Fit solution, but by reading the G.Fit Overview I figured out that it uses the FE-C ANT+ profile, and if this is right, then I have bad news for you: The FR45 does not support FE-C.

Many thanks, tmk2, for taking the time to look and reply.

Do you know if Bluetooth could be a solution?

I'll provide some information which might help someone in the future. 

Garmin support told me,

Providing the spin bike has ANT+ then you can pair the Forerunner to the bike, these are the steps to pair the watch and the trainer...

https://www.dyaco.co.uk/key-equipment/johnny-g-spirit-bike

The bike manufacturer states,

Besides following their performance metrics, they will be able to retain them on any of their devices (smartphone, tablet, laptop). Smart, the Johnny G Spirit Bike can be connected through Bluetooth or ANT+.

Do you know if Bluetooth could be a solution?

I don't think so. Bluetooth has its FE-C equivalent which is called FTMS, but the FR45 doesn't support it either.

Providing the spin bike has ANT+ then you can pair the Forerunner to the bike, these are the steps to pair the watch and the trainer...

I couldn't find any instructions in the link provided. The only instruction, which is barely relevant, is information in the bike's console manual, that describes how to get HR data from the watch to the bike's console.

they will be able to retain them on any of their devices (smartphone, tablet, laptop).

I couldn't find any more details about it, but I figure that this can be done with a special app running on a smartphone or computer, but it doesn't help in figuring out how to connect it to a garmin watch.

The Garmin G-Fit chip contains ANT+ and most all workout trackers operates on one or both of these protocols.

This sentence doesn't make any sense to me. What does it mean "both protocols"? No protocols are mentioned here. It is not enough to state that it has ANT+. It is essential to know which ANT+ profiles are provided, and that piece of information is nowhere to be found (except the link I provided in my first post).

Having said all that, please note, that there are indeed some Forerunner models which support ANT+ FE-C profile, and probably could be connected to the bike, but the FR45 is not one of them.

You're a star, thanks again. 

I just received a reply from a different Garmin support guy, he states,

I cannot confirm the watch will be compatible with this bike, as this watch is not even compatible with Power Meters in general.

This would have saved me (and you) a lot of time.

So the watch is out. I'll try to find an app for an android phone. Do you know of anything which would receive/import the data?

Do you know of anything which would receive/import the data?

I haven't used anything personally, so I cannot recommend, but a quick search yielded this:

https://play.google.com/store/apps/details?id=net.pierrox.indoorcyclingworkout

Also, you might want to try this out:

https://play.google.com/store/apps/details?id=com.kinomap.training

It's not free, but can be tried out for free, just to check if it's compatible.

Thank you. I'll try those.