There is non kosher scroll inside with Traveler Prayer in Hebrew
With Star of Magen David, It is written in Hebrew "SHIN DALET YOD" - first letters of "SHOMER DLATOT ISRAEL" or "Guardian of the Doors of Israel"- one of the names of G-d.
Can be sticked to surface. On the back of the mezuzah there is a sticker
The Star of David (Magen David in Hebrew or Mogen Dovid in Ashkenazi Hebrew, Shield of David, Solomon's Seal, or Seal of Solomon) is a generally recognized symbol of Judaism and Jewish identity. It is also known colloquially as the Jewish Star. Kabbalah makes use of this sign, arranging the Ten Sephiroth (sefirot, spheres) in it. With the establishment of the State of Israel the Jewish Star on the flag of Israel has also become a symbol of Israel.