f(x) reveals Luna & Amber’s teaser photos for "Electric Shock"

After announcing their upcoming comeback and revealing member Krystal, Victoria, and Sulli's teaser photos, f(x) has unveiled Luna and Amber's teaser photos for ‘"Electric Shock". Just like the previous members teaser photos, Luna and Amber are wearing blue colored contacts.

The title track of the album titled "Electric Shock", is reported to be an energetic and rhythmical electronic-dance tune with an addictive chorus. The song compares the emotions associated with falling love to getting
"electric shocked".

Check out the teaser photos above. The mini-album will be on iTunes worldwide on June 10th and June 13th for the physical release.