Do the V2 tags work with other Shot Scope devices?

Yes, V2 tags will work with any Shot Scope device.

If you have just purchased a V3 watch, H4 or ProLx+ and you had a V2 watch previously, then we do recommend you switch the tags over as they perform slightly better than the V2 tags. This is all you need to do, the new tags don't need to be synced with the watch or activated on My Bag.

Simply replace the physical V2 tag with the new tag.