pf2e.fyi
From Pathfinder Impossible Magic, which isn't enabled.

Sunweave (Major)

ITEM 18
Price 24000 gp
Usage etched onto armor
Bulk —

Your armor glows softly, granting you a +3 item bonus to Perception checks.

Activate—Glint of Ambition (concentrate, fortune)
Frequency once per day
Trigger You're about to attempt a Perception check for initiative

Effect You roll the check twice and take the better result.
Pathfinder Impossible MagicORC