Fungsi :
-Utk mendengarkan suara disebelah tembok
-Alat tinggal di tempelkan ke tembok dan anda langsung bisa mendengar suara percakapan org dari ruang sebelah
-Bisa mendengarkan dari ketebalan tembok max 20cm

Specs :
-Power output : 1 watt 
-Frequency response : 200-1200 Hz at -3dB
-Adjustable filter allows emphais on high frequency sounds
-Volume control adjusts the volume for comfortable listening
-Recorder output/input jack

Shotgun mic specs :
-Portable and light weight
-High gain built in amp with two settings
-Sound filtering
-Wind shield
-Sensitive electret condenser mic
-High sound pull even by itself

Headphones specs :
-Dynamic stereo headphones
-Digital quality
-Low leakage ear cups
-Unique noise signal ratio
-Maintains sensitivity and stability of sound