1.8X Monocular Telescope: The design of the parabolic microphone monocular telescope is very attractive, and the 8x monocular telescope allows you to see objects clearly at close range. The ergonomically designed handle can be easily operated with one hand by simply pulling the on/off trigger. You can adjust the volume from low to high for better hearing. 2. Ideal Equipment: With this outdoor bird watching gadget, you can observe nature without disturbing animals. It allows you to hear sounds up to 300 feet/100 meters away. 3. Special Design and Function: The parabolic sound collecting dish bionic ear mobile device with built-in monocular is ideal for spotting animals from a distance or observing the subtle details of smaller animals. It is equipped with a 3.5mm headphone jack to avoid disturbing the surrounding environment. The sound amplifier also comes with its own headphones. 4. Easy to Use: This sound amplifier is powered by a 9-volt battery (not included), which works better when used in an open area. Within the aiming range, pull the trigger to amplify the sound. The frequency can be adjusted to reduce noise, allowing your ears to easily feel the beautiful natural notes.