1. DURABLE: The outdoor gadget boasts a durable design and is powered by a 9V battery (not included), providing ample energy to last throughout the day. 2. SPECIAL DESIGN AND FUNCTION: Equipped with a builtin monocular, it's for observing animals from a distance or examining the finest details of smaller creatures. It features a 3.5mm headphone jack and includes its own headphones to minimize environmental disturbance. 3. HEARING FROM A LONG RANGE: Never lose track of your favorite pet again with this outdoor device. It captures sounds from up to 100 meters away, making it ideal for observing nature without disrupting wildlife. 4. APPLICATION: A portable sound amplifier that functions as a bionic ear, designed for outdoor hunting, sports, and all forms of entertainment. Birdwatchers and nature enthusiasts will be impressed by the exceptional sound quality of this innovative listening device.