Well, I opened it, and it looked like a phone charger. Then I plugged it in my phone. It charged it like a phone charger. So my opinion is, IT'S A PHONE CHARGER! IT ALSO HAPPENS TO WORK FOR THE TYPE OF PHONE IT SAYS IT WILL WORK FOR! THAT'S EXTREMELY IMPORTANT FOR PHONE CHARGERS THESE DAYS. TRUST ME, I'M AN EXPERT!