Pro
Enable the K2 plugin Slide Tooltips if you wish to enable tooltips inside slides of K2 item origin.

This plugin will add the fields for 5 tooltips to each K2 item, no matter if the K2 item will be used as a slide or not (except for item categories that have the K2 plugins disabled for them).

The categories holding the slides must have the advanced parameter Enable K2 plugins set to yes.