Electronic whistle - Acme sports whiz  Ref: electronic

Acme Sports Whiz - brand new, the first electronic whistle from Acme. Most whistle about 109 decibels, Tornado 200 most powerful blown whistle @ 120 decibels, this electronic whistle reaches 130 decibels so beyond peoples lung ability. Sound will travel over 1 mile Sound is directional - point in direction required Choice of 4 different tones Can be controlled and varied by the squeezing of the trigger Showerproof 40,000 blasts for normal batteries