Day and night dual-use night vision monocular night vision device, 1.5-inch visual screen, 5x digital zoom, support video recording and photo shooting, portable and rechargeable infrared night vision device, suitable for day and night hunting, camping

SKU: KF33.059

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All black viewing distance: 150-200M. 
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Yes. It has infrared function and you can use it at night. 
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No app is required to work. You can download pictures and videos directly to your computer using a USB cable.