Uncover the details of the dark with the FNIRSI NVS-20 Portable 4K Full-Color Infrared Night Vision Device. Built as a highly portable, single-hand monocular system, this optical instrument features a high-sensitivity sensor that displays vivid full-color imagery in low-light conditions and shifts to a crisp, high-definition monochrome view when operating in complete darkness 🌌. Supporting premium 4K video recording and 48MP high-resolution photo capture, it allows you to record nighttime security footage, outdoor camping activities, or wildlife encounters with absolute clarity. The device features an integrated 3W 850nm infrared light source with a 7-gear adjustable setting, enabling you to optimize visibility based on changing ambient light levels. It achieves a clear long-distance viewing range of up to 300 meters in pitch blackness, enhanced by an 8x digital zoom to safely bring distant subjects closer. A built-in 3.0-inch high-definition screen offers an intuitive layout for real-time monitoring and playback, powered by a robust 4000mAh rechargeable lithium battery for reliable field use 🧭. Video Resolution: 4K UHD, 2.7K, 1080P, 720P Photo Resolution: 48MP, 30MP, 25MP, 20MP, 12MP, 8MP, 5MP, 3MP Optical Sensor: High-sensitivity full-color low-light sensor Infrared Illuminator: 3W 850nm IR light with 7 adjustable gears Observation Range: 250 to 300 meters in complete darkness Digital Zoom: 8x magnification Built-in Display: 3.0-inch HD color screen Power Supply: 4000mAh rechargeable lithium battery Portable monocular style body design