Ideal for observations, wildlife watching, and hunting! This sound amplifier gives your ears incredible range: With up to 37 times volume amplification and the precise alignment of the parabolic reflector through an optical sighting unit, you can hear bird songs, sounds from wild animals, and conversations between people from distances of up to 90 meters! Thanks to the built-in memory, you can digitally record sounds for up to 13 seconds. The sensitivity of the directional microphone is continuously adjustable. • Powered by a 9V block battery (not included) • Approximately 26 cm long • Weight: Microphone 360 g, Headphones 200 g • Included: Headphones and directional microphone.