Default notification ringtone?

[dlalonde]

Edit: I've been told it's Surface Dot

I've seen the Surface Duo for the first time in person today and was very impressed. One thing I noticed at two Best Buy stores is that there was no default notification sound set. It was set to "none". So I'm guessing this is a store thing given there are 2 or 3 available ringtones with "surface" in their name for notifications.

Can anyone tell me what is the default notification sound out of the box?

Thanks!