The Spy Wall Listening Device is highly sensitive and is equipped with high quality headphones and an FM receiver for bug transmitter capability. You can also record the sounds and conversations by this Spy Wall Listening Devices.   Features:- It has a volume dial and a gear wheel with a 4 stage power increment. You can use the 5inch probe to insert into a drilled hole in a wall. Battery Backup: 1 Hour

  The Spy Wall Listening Device is highly sensitive and is equipped with high quality headphones and an FM receiver for bug transmitter capability. You can also record the sounds and conversations by this Spy Wall Listening Devices.   Features:- It has a volume dial and a gear wheel with a 4 stage power increment. You can use the 5inch probe to insert into a drilled hole in a wall. Battery Backup: 1 Hour