i know that speakers don't fit in a pocket by headphones DO !
you will need:
tip 31 transistor
light e.g. led flashlight
tape (electronic tape)
knife or wire stripper
Step 1: My One
this is my one
Step 2: Strip Cable and Solder
carefully strip audio cable you should have 3 wires
solder this circuit DO NOT SOLDER TO BATTERY !!!
if you do it wrong it wont work as-well
Step 3: Connect Battery
connect wires on battery in battery box like so
Step 4: Plug in Like
plug in like so and put loud song with beats