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From Pathfinder Impossible Magic, which isn't enabled.

Potion of Minute Echoes

ITEM 9
Price 125 gp
Usage held in 1 hand
Bulk L
Category potion

Activate (manipulate)

No matter how carefully you open this bottle, it always lets out an audible, echoing pop. For 1 minute after drinking this potion, you gain a +2 status bonus to Perception checks to hear. In addition, each time you Seek, your hearing becomes a precise sense until the beginning of your next turn, allowing you to pinpoint creatures' locations and otherwise perceive the world in detail by listening to the sound of echoes.

Effect: Potion of Minute Echoes

Pathfinder Impossible MagicORC