This charm resembles an ebony starburst.

A chronocharm of the celestial wanderer slows your perception of time, allowing you a second chance to recognize potential danger. When you activate this chronocharm, you can immediately reroll a single Listen or Spot check that you just attempted. The result of the second roll replaces the first result.
This ability functions once per day.

CHRONOCHARM

A chronocharm occupies the throat body slot, but it can be worn simultaneously with any number of other chronocharms, which all function normally. However, you can’t wear more than one of the same chronocharm.
You must wear a chronocharm for 24 hours before you can access its abilities.
If it is taken off, it becomes inactive until worn for an additional 24 hours.

Prerequisites: Craft Wondrous Item, hawkeye (SC 110 ).
Cost to Create: 250 gp, 20 XP, 1 day.