LONDON — When Kate Collins was looking for a combination 18th birthday and high school graduation present for her eldest son, Will, time was of the essence.

She wanted a milestone gift, something he would always remember receiving at a pivotal time in his life, as he was leaving home in London to begin his studies at Harvard University.

She decided on a watch, something that was cool as well as practical, that he could have and use all his life. After some initial searching online, Ms. Collins, an American mother of four based in London, decided on a stainless steel Tag Heuer. She said it was not inexpensive, but she was drawn to the watch because it was not flashy, was a practical timepiece and could even be worn when swimming. Read more