While many coaches and referees prefer the traditional Fox 40 whistle, the electronic whistle is a great alternative that is different in a few ways! The electronic whistle has three different tones that will cut through any competing noise and be instantly recognizable. Having three unique tones is also helpful for multi-sport fields and can be aimed in specific directions. This electronic whistle sounds at 125 dB and is operated with a push of a button. The push operation is a hygienic solution to classic whistles and allows for use by multiple people. It also includes a 9-volt battery and a detachable wrist lanyard so you can keep it handy. No matter which Fox 40 whistle you opt for, you'll be getting a great value.