High Sensitive Wall Detect Listening Device with Memory card slot (can make audio recording)

Model: HY790

Features:

Clear reception between the walls.
The needle is for injection into the door or wall.
It also has audio recording function.

-Continuous monitoring for 100 hours
-Four Audio Choices: A(200MHz); B(800MHz): C(1200MHz); D(partition bougie monitoring)
-Sonde's sensitivity: -70db,
-max times of amplifying the audio: 2000 times
-Penetrability: Cement wall, Steel wall, wooden wall, iron wall, glass and air brick

Package Contents:

1 x Wall Listening Device
1 x Power Adapter
1 x Sonde
1 x Bougie
1 x Earphone
1 x User Manual

Memory card not included!