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Important Seal Information  

Button Pad Control

Play / Pause Button

Next / Fast - 

Forward Button

Previous / Rewind 
Button

Volume up

Volume down

The Interval Waterproof Headphone System features a removable silicone seal that forms 
a waterproof barrier between the base and lid of the case. It is extremely important that 
special attention is paid to ensure the silicone seal is completely seated in the groove of 
the lid. If the seal is loose, out of alignment, twisted or pinched in any way, it will 
compromise the waterproof integrity of the case and should not be used. Any debris 
such as hair or sand will keep it from forming a watertight barrier and should be cleaned 
off before use.

Caution:

 If the seal comes out of alignment, carefully place it in the groove, ensuring all 4 

corners are correctly installed. Compress the lid to the base and then re-open it to make 
sure the seal is fitted correctly into the groove.  The seal should appear straight and uniform 
along its’ edge and should not fall out easily.

If you have any concerns please contact H2O Audio Customer Support.

Installing the shuffle into the case  

Open Case

Close Case

Ensure the case is 
closed and locked.

Plug audio jack into the shuffle player, place shuffle into case and ensure the 
control pad and the Button Pad Control are aligned. Close case.

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The H2O Audio Interval Waterproof Headphone System is a swim specific music solution 

for the iPod shuffle (2

nd

 Gen). The integrated waterproof case easily attaches to practically 

any swim goggle providing a low profile, tangle free listening experience.

Before using your Interval Waterproof Headphone System for the first time, it is highly 

recommended that you become familiar with opening and closing the case to ensure the 

case is sealed properly during use. To verify that you have sealed the case properly we 

recommend that you test the product without a shuffle inside before initial use. Please 

follow the instructions below.

Getting Familiar with Your Headphone System

1. Open the case and verify the seal area is clean and free of debris or damage. 

2. Submerge the system in water and soak for 30 min.

3. Manipulate the Button Control Pad during submersion.

4. Remove from water and dry exterior.

5. Open the housing and ensure there is no water inside the case. 

If water is found inside the case please contact H2O Audio Customer Support immediately.

Introduction

Copyright Notice:
This owner’s manual is copyrighted, all rights reserved. It may not, in whole or in part, be copied, 
photocopied, reproduced, translated, or formed into any electronic format without prior consent in 
writing. H2O Audio is a registered trademark of H2O Audio, Inc. Apple and iPod are registered 
trademarks of Apple Inc.  

Before using this system, please be sure to read, understand, and follow the instruction of this manual.

Waterproof Headphone System
Developed for Swimming

h2oaudio.com

iSH3-70 20081013

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