The enhanced resonance module, or ERM, increases the sensitivity of the recipient's auditory system, allowing him to detect ultrasonic frequencies.
Benefit: The recipient can detect ultra-sonic frequencies, such as the sounds of dog whistles, bats, and certain electronic devices. This allows the recipient to make Listen checks to detect sounds that are normally beyond the audible human range.
Location: One head
Hardness/Hit Points: -/2
Base Purchase DC: 10