- Easy to use: Powered by a 9-volt battery (not included). For best results, use in an open area. Within the aiming range, pull the trigger to amplify sound. The frequency can be adjusted to reduce noise, letting you clearly hear natural notes. - Quality material: Main body made of high-quality plastic, comfortable to hold and with good shock absorption. Lightweight and travel-friendly, built for durability while on the go. - Nature observing device: Built-in 8x zoom monocular lets you observe wildlife from a distance in detail. You can listen to birds and other animals with the device. - Practical design: High-definition imaging with an effective viewing distance of up to 300 feet. Use an earphone to hear surrounding sounds while viewing the scenery. Use scenarios - Birdwatching in a park or backyard: observe distant birds in detail and listen to their calls for a richer experience. - Wildlife viewing on hiking trails or nature reserves: combine close visual observation with audio of distant animals. - Camping or travel: compact, durable device to enjoy nature and hear ambient sounds while exploring.