vidaXL Sound Amplifier Listening & Observing DeviceThe sound amplifier listening and observing package enables you not only to hear sounds of any volume over 100 meters and even record them, but also to follow objects optically with no need of using extra monoculars. With this sound simplifier listening device at hand, even the faint singing of birds can also easily be detected. The built in digital recording chip can be used for recording for 12s, playback or copy the file onto a standard audio tape