Electronic 3 Tone or 2 Tone Whistle Electronic 3 Tone Whistle: For those times when a standard whistle just won't do! 125 dB with 2 distinct tones Easy to use single hand operation which lessens the usual germ sharing associated with standard whistles 4 CR2032 Lithium batteries and wrist lanyard included Electronic 2 Tone Whistle: For those times when a standard whistle just won't do! 125 dB with 2 distinct tones Easy to use single hand operation which lessens the usual germ sharing associated with standard whistles 4 CR2032 Lithium batteries and wrist lanyard included