Post a photo of the bottom of the speaker and we can tell you what generation it is. But if it is an A100, it is a Gen 1.
FYI… you can still purchase a Sonos One on the Sonos website. You can use a Gen 1 and Gen 2 together to create a stereo pair.
Also, the One isn’t compatible with Bluetooth.
Oh thanks so much. See the photo.
maybe it’s airplay that let’s me play directly to it without using the app?
Moderator edit: removed picture with serial number as it’s identifying information
Oh yes I can see the One SL on the website. I’m presuming that is a gen 2?
You have a Sonos One (Gen 1) and it is compatible with AirPlay.
There is only one generation of the One SL.