Instructor's whistle
From Twilight Heroes Wiki
instructor's whistle
Plural: instructor's whistles
It's not particularly loud, but it certainly commands attention and respect. In a pinch, you could probably use it to direct traffic or act as a life guard.
Accessory
Level Required: 12
Autosell value: 210
+5 levels to sidekick performance. (Does not exceed level cap.)
How Obtained