1. Easy to use: This sound amplifier is perfect for observing nature from a distance. It comes with a built-in 8x zoom monocular. Thanks to this, you will be able to observe nature in its full details. Listen to birds and other animals, anything is possible with this nature watching device. 2. Easy to listen: Please use the sound amplifier observing listening device in a spacious and quiet place and dont use it with a lot of noise around. The sound detecting system is powerful enough to pick up sound at a distance of 200-300 feet away. Adjust the frequency to reduce some background noise for better listening. 3. Easy to store: This sound amplifier is able to record 12 seconds and noise at once. It also comes with instant playback functions. This allows you to fully observe and analyze the animals in your area.It has a TF memory card slot where you can place your TF memory card to store the recorded sound. 4. Can connect headphones: built-in monocular is ideal for observing animals from a distance or for observing the smallest details of smaller animals. In order not to disturb your surroundings, a 3.5 mm headphone jack with a 3.5 mm headphone jack is connected. 5. 100% SERVICEIf you are confused about the quality of the product or have any other questions, you can email us and we will be happy to solve the problem for you. If you are not satisfied or inappropriate about the product, you can contact us and we will give you a satisfactory answer. It is ideal for studying birds and wildlife Watch flying Birds' gestures and hear your voice clearly The powerful viewing optics make motifs appear 8 times closer The sound detection system is powerful enough to record a human conversation at a distance of 100 meters or more Fain bird songs are easily recognized 8X magnification, watch things 8 times closer. Digitally record sounds. Playback sounds or transfer them to your tape recorder Comes with a pair of comfortably padded, full-sized headphones to reduce ambient noise SPECIFICATION Material:ABS Size 20cm / 7.87 inch 8.267.877.08 inch /212018 cm Weight700g Magnification: 8x Power from: 9 V battery, not included Color:black Package includes: 1 bird observation equipment, without batteries NOTE: Due to differences between different displays, the picture may not reflect the actual color of the item. Due to manual measurement and different measurement methods, please allow 1-3cm deviation. Thank you!