Question

What are Phaz P2 headphones ?

Answer 1

Phaz P2 headphones is powered -- while in active mode -- by a 1200 mAh battery that will also charge your phone via a USB port while you're listening.

For more information:-

http://www.slashgear.com/phaz-p2-headphones-charge-your-gadget-while-you-listen-06362560/

Answer 2

These headphones can charge up your smartphone while you listen thanks to a built-in rechargeable 1,200 mAh battery capable of getting smartphone 60% full