Special skin grafts create luminous displays on the recipient's flesh. Most recipients use it purely for decoration, but the same technology can provide a built-in chronometer.
Benefit: The recipient can control the brightness of the luminescence as a free action, negating it entirely if desired. As its most intense, luminous skin can illuminate squares occupied by or adjacent to the recipient. The chronometer serves the same function as a wristwatch, including date, time, and alarm functions.