The pocket sundial fortunately included some English notes, explaining that the 13 lines that are roughly perpendicular to the pointer are seasonal lines. The far right line is the winter solstice (lowest sun, longest shadows) while the leftmost line (aligned with the tip of the pointer in my photo) represents the summer solstice. Today is just about two months past the winter solstice, and the shadow's tip touches the second line. The lines that are roughly parallel to the pointer are time lines (half-hour increments), with the longest (center) line representing noon. This picture was take at 12:36 EST, and the shadow is well short of the 12:30 line, but the instructions also mention that some adjustment is needed for longitude, though the English explanation of this isn't very comprehensible. They also didn't mention the use of the compass, but I knew enough to align the red end of the compass needle with north.
I was surprised to get such a cool little gift, although I think my Korean friend knows that I have an interest in astronomy (or at least optics). I was also surprised that it is sunny enough today to test it!
(looks like this was taken right around the same month and time of day as my photo)