1.Ideal Equipment: With this outdoor bird watching gadget, you can track your favorite animals. It allows you to hear sounds up to 300 feet/100 meters away. This makes it suitable for observing nature without disturbing the animals. 2.8X Monocular Telescope: The portable parabolic microphone monocular telescope is beautifully designed, 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 just pulling the on/off trigger. You can adjust the volume from low to high for better hearing. 3.Easy to Use: This product is powered by a 9-volt (not included) battery and works better in open areas. Within the aiming range, pull the trigger to amplify the sound. The frequency can be adjusted to reduce noise, allowing you to easily enjoy the wonderful natural sounds. 4.Application: Used as a sound mobile device for bionic ears. Designed for outdoor hunting, sports or various entertainment venues. Bird watchers and nature lovers will appreciate the sound quality of this listening device.