Frequency Control: Reduce unnecessary noise. Adjust frequency knob until you are satisfied.
Name: 8X 21 Focusing Telescope. Effective observation distance: HD 8m1200m. Material: optical glass lens with antireflection coating and broadband coating on surface. Field of view: 7.5°.Accurately directional listening distance: 200 meters in a quiet outdoor environment. Waveform distortion: less than 5%. Recording: solid-state recording time 18 seconds. Replay: The replay accuracy of solid-state recording is 0.5%.
Transcription: Through the transcription line, the recording can be transcribed to computer, recording pen or other audio equipment. Energy consumption: Switch circuit low energy consumption design, not consume electricity when not in use. Use for more than 6 hours. Power supply: 9V square battery (not included).
Host appearance: the internal and external structural parts are made of ABS engineering plastics, surface environmentally protection rubber non-slip spray paint. Audio: Wave distortion is less than 0.8%. Special high-fidelity earplugs for listening bird instrument, clear sound quality and better noise isolation. We will respond to you within 24 hours and do our best to help you out!
Original price no hidden charges. If you have a problem with the item you have got please let us know within a week or else, we cannot accept it. We contact you within 24 hours and provide you the best solution we can.The item "Parabolic Sonic Listening Device Spy Bionic Ear Sound 300FT Microphone Amplifier" is in sale since Monday, December 28, 2020. This item is in the category "Consumer Electronics\Other Consumer Electronics". The seller is "hassadealmart91" and is located in Shanghai. This item can be shipped worldwide.