If you have an official Fox40, and then use this, you will know it is a cheap knockoff.  The sound is completely different, and nowhere near as powerful as a Fox40. All of my kids are lifeguards, and have used Fox40s.  My daughter saw this pink one, and asked for it, for this summer at work.  She ended up using her "old" Fox40 because she could not blast a loud enough warning from this junk. Buyer beware.