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: This outdoor birdwatcher gadget helps you keep track of your favorite animals. It allows you to hear sounds up to 300ft/100m away, making it a great outdoor gadget for observing nature without disturbing the animals. 3.Special design and function: Parabolic sound collecting dish bionic ear mobile device, built-in monocular is useful for spotting animals from afar or observing smaller animals in detail. It has a 3.5mm headphone jack to avoid disturbing the surroundings. The sound amplifier comes with its own pair of headphones. 4.Easy to use: This sound amplifier is powered by a 9-volt battery (not included) and works better in an open place. Pull the trigger within the aiming range to amplify the sound. The frequency can be adjusted to reduce noise, enabling you to easily enjoy the beautiful natural sounds.