That button-shaped very good music player makes use of your body heat to charge by itself. At nighttime when you’re sleeping, you may place Button MP3 player on the pillow alongside you in order that it may continue soak up the body heat to charge the battery. You may connect this gadget for your garments like a button to acquire the body heat, these 4 function buttons have to be created to mimic the stitches holes in the garment button, it looks very amazing.

Button MP3 Player Concept2

Button MP3 Player Concept1

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