1.8X Monocular: parabolic microphone monoculars design 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 only by pulling the on/off trigger. You can adjust the volume from low to high to get better hearing. 2.Ideal equipment: With this outdoor birdwatcher gadget, you can observe nature without disturbing the animals. It allows you to hear sounds up to 300ft/100m away. 3.Special design and function: Parabolic sound collecting dish bionic ear mobile device, built-in monocular is great for spotting animals from afar or for watching at the slightest details of smaller animals. It comes with a 3.5mm headphone jack to avoid disturbing your surroundings. The sound amplifier also comes with its own pair of headphones. 4.Easy to use: This sound amplifier is powered by a 9-volt battery(not included), and the effect will be better when used in an open place. Pull the trigger within the range to amplify the sound. The frequency can be adjusted to reduce noise, allowing your ears to easily feel the beautiful natural notes.