Magnadyne HP-400 Operation Manual

1. Volume Dial: Rotate to increase and decrease the

volume level. 

2. Power Button: Slide this button to turn the

headphone ON/OFF. 

3. Battery Compartment: Slide cover open to access

the batteries.

4. Adjuster Bar: Slide this bar up/down to adjust the

headphone fit.

Headphone Operations Manual

Model: HP-400

Installing the Batteries:

To install the “AAA” batteries supplied, follow this

procedure:

A. Hold the headphones in one hand and place

your thumb onto the gripping arrow on the

battery holder cover. 

B. Press down on the gripping arrow while sliding

the door away from the headphones to expose

the battery compartment. 

C. While observing the battery polarity, place the

batteries into their compartment.

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