The lights are just aesthetic; they are not nearly bright enough to serve as your only source of illumination.  You will need additional light fixtures.

The mirror its self is decent.  There is no noticeable distortion.  That being said, I would never pay full price for this.  Whilst it looks decent on the wall it feels cheap in the hand, and the photos are somewhat misleading (they imply the ring around the perimeter are illuminated, but it's not, it simply catches and diffuses some of the light from the LEDs wrapped around the edge of the base in the back.  There are no forward-facing LEDs, which would no doubt offer much brighter illumination).