Highlights: This Nature Observing device use a sophisticated roof prism optical system & turn focus ring until you see clearly ◦ This Digital Listening set observe birds amp; animals at 8X magnification monocular Electronic Digital Recording Listening hear animal sound over 300 feet away Digital recording sound with microphone ◦ Playback sounds or transfer them to your tape recorder Frequency controller for reducing unwanted noise Equip with parabolic sound collecting dish & headphone Powered by 9V alkaline battery Specification: Sound Distance: 100 Meters Max Built-in Monocular: magnification x 8 Digital Sound Recorder: 12 seconds (new file records over last) Headphone Jack: 3.5mm Power Source: 1x 9V Battery Weight Approx:235g Size Approx:27 x 18 x 5.5 cm Package Contents:1 x Parabolic sound collecting dish 1 x Headphones 1 x