What does Jim's present in "The Gift of the Magi" tell you about his character?

Jim sells the gold watch, which O. Henry indicates was his "prized possession", in order to buy Della tortoise shell combs for her hair. His Christmas present shows that he is generous, even to the point of self sacrifice. He's a man who doesn't dwell on material objects. He readily gives up his watch just to make his wife happy. She is the most important thing in his life. He also seems to be a level-headed young man who takes things in stride. While he is slightly taken aback by Della's new hairstyle, he accepts it without negative comment and O. Henry reports that he was neither shocked nor surprised, as Della feared. He simply hugs Della and in this act shows the unqualified love he has for his wife. He tells her that they will put away their presents for now and use them at some future time. This shows a very sensible man who, despite the current financial situation he and Della find themselves in, knows things will get better in the future as long as he has Della's love. While O. Henry says that Jim and Della were "two foolish children" he strongly suggests that the strength of their love and willingness to sacrifice for the other makes them as wise as the Magi who brought presents to the baby Jesus so many Christmases ago.