Built-in large capacity lithium battery to supply power, so you can recharge it on time. You can use this night-visions device during the day or night to help you see distant objects. Features: With a large 1.54-inch screen, the viewing range is expanded and enhanced, making it easier for you to locate and identify targets. Targets within a 500m range can be clearly seen at night, thanks to the cross cursor locating feature. The digital night vision monocular comes with a cross visual reticle. By pressing the "+" and "-" keys, you can move the crosshair up, down, left, or right to align with the sight. After identifying your target, adjust the imaging focal length on the night vision device to match your scope magnification, ensuring the target is clearly displayed on the screen. This night vision scope is versatile and can be used for a variety of night outdoor activities, including animal observation, animal tracking, and fishing watching. Specifications: Material: Metal. Model: Type 1:Night Vision Monocular+Rail Clamp Type 2:Night Vision Monocular+Rail Clamp+Eyepiece Display: 1.54 inches Resolution: 320*320 Video synchronization delay: less than 0.01 seconds Visual distance: 200-300 meters, visual distance 500 meters Battery specification: 852535*2, 1700mAh. Battery life: 4-5 hours without infrared, about 1.5 hours with infrared Size: 24*5.5*11cm/ 9.4*2.2*4.3in Weight: 300g/ 10.6oz Package List: 1 * Night Vision Monocular 1 * Rail Clamp