Introduction: The product is a versatile device for which you will soon find a variety of uses. It is ideal for studying birds and wildlifr. The powerful viewing optics make subjects appear 8 times closer. The sound detecting system is powerful enough to pick up a human conversation at a distance of 100 meters or more. Faint bird songs are readily detected. Recordings can be made on the digital recording chip for playback or for transfer to a standard tape recorder. Each record time is 12 seconds. Functions: Observe birds & animals Digitally record sounds Playback sounds Specifications: Sound Distance: 100 Meters Max Built-in Monocular: magnification x8 Digital Sound Recorder: 12 seconds (new file records over last) Headphone Jack: 3.5mm Power Source: 1x 9V Battery.