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: This night-visions device has the crossing cursor system for better and quick aim, giving you a better experience. The effective distance of all-black night-visions is 200-300 meters, and the visual distance is 500 meters. Wide Applications: This tool can be widely used for night outdoor animal observation, animal tracking, fishing watching and so on. 1700mAh rechargeable battery provides long battery life. Built-in reticle for precise positioning. Specifications: Material: Metal. 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 Video format: AVI CVBS Size: 11*11*5.5cm / 4.3*4.3*2.2in Package size: 20*23.5*7cm / 7.9*9.3*2.8in Package weight: 393g / 13.9oz Package List: 1 * Night Vision Monocular