features: Ultra Long Night Vision Range - The effective range for all black night vision is 200-300 meters, with a visible range of 500 meters, and can distinguish objects with high definition at long distances. Small and Portable - This telescope is small and lightweight, weighing only 600 grams, making it easy to carry. Bring the telescope to your outdoor activities. With tracking cross - The cross cursor can be adjusted horizontally and vertically, and the adjustment cursor coincides with the crosshair of the sight glass. It can be used while charging, but does not support memory cards. Long battery life - The battery life is 4 to 5 hours (without infrared), approximately 1.5 hours (with infrared). Provide two different modes and choose the mode according to your needs. Instructions for Use -4x zoom adjustment, black and white at night, requires 850nm infrared lighting for supplementary viewing, and infrared lighting needs to be turned off during the day to present a color interface. Specifications: 1. OL display screen: 1.54 inches 2. Magnification: 4x electronic amplification 3. Resolution: 320 * 320 4. Main chip sensor: Cmos Sony307 5. Infrared: 850/940 default 850 6. Video synchronization delay: less than 0.01 seconds 7. Full black visible distance: effective distance 200-300 meters, visible distance 500 meters 8. Range: No infrared for 4-5 hours, with infrared for approximately 1.5 hours 9. Work range: supports charging while using 10. Memory card: not supported 11. Weight: 0.6g