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From Pathfinder Howl of the Wild, which isn't enabled.

Echo Receptors

ITEM 10
UNCOMMONGRAFTINVESTEDMAGICAL
Price 950 gp
Usage implanted
Bulk —

You can sense your surroundings using sonic pings rather than relying on your vision. You gain echolocation at 40 feet, allowing you to use hearing as a precise sense.

Pathfinder Howl of the WildORC