Amazon.com has a Spy Listener for $12.99 with Free Shipping.
Secretly hear up to 30 feet away! Sleek micro listening device picks up the faintest sounds. Listening scope springs into position to catch all the action. Spy device easily clips off so sunglasses can be worn alone. Single headphone lets you listen in secret. Automatically limits volume of very loud sounds. Lenses are UV protected and impact resistant. n