Japanese Micro Giken contact microphone, amplifier and pickup coil for telephone recording. This set is used also by the Finnish Police. Before entering to dangerous situations some surveillance listening can be done through the door.

Bionic Ear, propably the most common surveillance microphone today. At the price below 200 US Dollars this listening device has become very popular among private investigators, police, government agencies and bird watchers around the world. With this unit you can listen to conversations from over 500 meters, if the outside environment is quiet enough. Without parabolic reflector microphone can be used as contact mike or for examlpe with a gun.