Transcription: Through the transcription line, the recording can be transcribed to a computer or recording pen.Energy consumption: The switch circuit is designed with low energy consumption and does not consume electricity when not in use. Use for more than 6 hours. supply: 9V square battery.(Batteries not included)The internal and external structural parts are made of ABS engineering plastics, and the surface is environmentally friendly non-slip paint. Special high-fidelity headset for listening bird sound, clear sound quality and better noise isolation.Use environment: The instrument is used in a quiet field, usually within a range of 10-200 meters. It is suitable for outdoor remote animal observation, listening and recording, travel and adventure.Product name: Monoculars Telescope with Sound CollectorTelescope specifications: 8X21 focusing telescope.Effective observation distance: 8m~1200m.Resolution: 166/1000 meters.Field of view: 7.5.Accurately directional listening distance: 200 meters in a quiet outdoor environment.Volume adjustment: adjustable.Sound frequency range: 50~20000Hz.Waveform distortion: less than 5%.Sensitivity: -68~-50dB.Recording: solid-state recording time is 18 seconds.: The accuracy of solid-state recording is 0.5%.Size: app.275x180mm/10.83x7.09incolor:As shownMaterial:plasticPackage Contents:1 x Monoculars telescope1 x Sound collection tray1 x HeadsetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.