Phaz P2 headphones review: These phone-charging headphones need work

You might recall Phaz’s multi-tasking Model P2 headphones from CES 2015. Well, those sleek carbon-fiber babies—which feature a built-in battery pack for recharging your phone on the go—are finally ready for real-world testing. I took the $250 P2s for a spin this past week, and while they’re not bad, they’re also not perfect. Yes, the built-in