3M
™
 WorkTunes
™
 Hearing Protector User Guide   5
Getting Started
Quickstart Guide
•  Insert two 1.5 V AA batteries  
(not included)
•  Turn the On/Off/Volume Knob to turn the 
unit ON
•  To adjust the volume, turn the same knob 
in either direction
•  Press the AM/FM button to select the 
frequency
•  Find a radio station by turning the Tuning 
Knob in either direction – or press the 
knob to move up through the stations one 
by one. You will hear Vocal Assist, a verbal 
guidance system, tell you what mode or 
station you are in so you don’t have to 
take off WorkTunes Hearing Protector to 
enjoy your favorite music and protect  
your hearing.
On/Off 
Volume  
Knob
AM/FM  
Button
Mode  
Button
Tuning
Knob
Turn clockwise  
for On/Volume up
Input 
Jack