1.This sound amplifier is capable of recording 12 seconds and noise at once. It also comes with instant playback features. This allows you to fully observe and analyze the animals in your surroundings.Bird watchers and nature lovers will be thrilled at the sound quality of this ingenious listening device. 2.Long Distance Listening: This outdoor gadget allows you to hear sounds up to 300ft/100m away, so you'll never lose track of your favorite animal again. This makes it a great outdoor gadget for observing nature without disturbing the animals. 3.Easy to use: Its built-in monocular is useful for spotting animals from afar or for observing the slightest details of smaller animals. It comes with a 3.5mm headphone jack to avoid disturbing your surroundings. The sound amplifier also includes its own pair of headphones. 4. Design: This product is powered by a 9-volt battery (not included), and the effect is better when used in an open place. Within the range, pull the trigger to amplify the sound. The frequency can be adjusted to reduce noise, enabling your ears to easily enjoy the beautiful natural sounds.