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STEP 2

Select silicone tip size

Choose the silicone tips that will fit you best and securely place them onto 

the custom earpieces. Check to make sure the silicone tips are securely 

attached. ONLY PLACE THE CUSTOM MOLDS AND THE MOLDING TOOL INTO 

THE WATER. DO NOT PLACE EARPHONES INTO THE WATER!

STEP 3

Place custom molds on molding tool

Assemble molding tool as shown. Test the molding tool to 

make sure it fits into your container and sits flat on the base.

Place custom molds on the molding tool making sure the left and 

right earpieces are on the left and right side of the molding tool.

STEP 4

Heat water to a boil

Stovetop: Boil 3in of water and remove from heat source. 

Kettle or Microwave: Fill a container with 3in of boiling water.  Slowly insert 

the molding tool and earpieces into the hot water and let sit for 5 minutes. 

STEP 5

Preparing to mold the earpieces 

Carefully remove the molding tool and molds from the hot water and 

remove one of the custom molds. Place the tool and remaining 

earpiece back in the water. Wait 30 seconds for the earpiece, that you 

have just removed from the molding tool, to cool. 

STEP 7

Snap in the earphones

Once the earpieces have cooled for 4 minutes, remove them from your 

ears and snap in the earphones. Make sure the right earphone goes 

into the right earpiece and the left earphone goes into the left earpiece. 

STEP 6

Molding the earpieces

Be sure the “R” custom mold goes in your right ear. The silicone tip should be 

towards the bottom. Now firmly press the earpiece into your ear. You may need to 

press and smooth the molding material slightly for a cleaner appearance. 

Immediately repeat the process for the other ear with the remaining mold. Leave 

the earpieces in your ear for 4 minutes to cool. Repeat the process for the other ear.

Note: You will not feel an acoustic seal until the 

earphones are inserted in the next step.

For the best results, watch 

our instructional video at 

www.decibullz.com/truewireless

STEP 1

Charge the case and earphones

Place the earphones into the charging case and fully charge earphones and 

charging case before setting up. The left earphone will only charge in the 

left cavity and vice versa. The "L" & "R" on the charging case will light up 

while the earphones are charging. If the Custom Molded Earpieces are 

attached to the earphones remove them at this time.

CAUTION:

 DO NOT PLACE 

THE MOLD INTO EAR WHILE IT 

IS HOT! WAIT UNTIL THE 

MOLD IS WARM AND PLIABLE.

TIP 

Using a mirror can make the process easier. 

CAUTION:

 

WATER AND 

OTHER ITEMS WILL 

BE VERY HOT.

Place both earphones back into the charging case and 

follow pairing and use instructions on the next page.

HOW TO MOLD

REMOLDING

If you do not feel an acoustic seal after molding try various sizes and 

combinations of canal tips before re-molding. If for any reason you would 

like to re-shape your earpieces simply unsnap the earphones from the 

custom molds by using the notches to gently release the earphones. 

Then repeat steps 2-6. 

To separate the custom mold from the earphone, place your thumb and 

finger on the notches at the top and bottom of the earphone and gently pull.

USB-C

CABLE

START HERE

Please review these instructions first to familiarize 

yourself with the molding process.

YOU WILL NEED

A cup, bowl, or pan at least 4 inches deep with a flat base 

at least 3 inches in diameter and boiling water.

3in of Water.

The top of the molding 

tool should remain 

above the water for 

safe removal.

-OR-

4in

3in

-OR-

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