Surveillance is part of a spy's life. Whether you're on the trail of an agent or checking for movement before entering a controlled zone (your sister's bedroom) you need to know what's happening.
Benefit: Hear even a whisper!

Features:

*Amplifies Sounds and Vibrations from far Away

*Tap Conversations through a Window

*Zoom in on what you want to Hear

*Automatic Volume Limiter Protects Ears from Loud Noises *Headphones Included