Secret agents will be able to listen to any soft or far away sounds with this special spy gear device! Bionic Ear Kids Spy Listening Device by Scientific Explorer allows children to listen to sounds with 300 feet range! This listening device reduces the background noise to make the hearing really clear. Bionic Ear Kids Spy Listening Device features a very sensitive microphone with adjustable sound sensitivity. Educational Toys Planet's Bionic Ear microphone picks up even the faintest whisper and transmit the sound through the included padded headphones. Moreover, this forensic science toy lets the agents look through the viewing scope to spot your spying subject, then pull the Bionic Ear trigger to amplify the sounds. Educational Toys Planet's electronic listening device is a great science and pretend toy for young spies. This spying sound listening gear requires a 9V battery (not included). Get equipped with the super power hearing for your next secret mission!