3M WorkTunes Manual

4
Basic Operations
Install two 1.5V AA batteries as shown.
Close battery door until it clicks.
Note:
- Do not mix old and new batteries.
- Do not mix alkaline, standard or
rechargeable batteries.
Press and hold the On/Off/Volume
button for 2 seconds to power hearing
protector. Turn the knob to adjust the
volume up or down.
Installing Batteries: Power and Volume:

3M WorkTunes Specifications

General

Noise Reduction Rating	24 dB
Bluetooth	Yes
AM/FM Radio	Yes
Battery Life	Up to 30 hours
Headphone Type	Over-ear
Connectivity	Bluetooth, 3.5mm Audio Input
Color	Black/Yellow
Battery Type	Lithium Ion
Charging	USB
Radio Frequency Range	AM: 530 - 1710 kHz, FM: 87.5 - 108 MHz
Cushion Material	Foam
Weight	12.8 oz (363 g)