1. The product has a high-performance image intensifier tube which has the resolution between 57-64, the signal-to-noise ratio 22 above, the FOM quality (quality factor) between 1400-1800, and the light sensitivity between 650-950. We guarantee all products in our company for 1 year. 2. Light weight 3. Automatic glare protection 4. Reliable and easy to operate 5. Built-in infrared auxiliary light source 6. It has two modes of handheld and head-mounted 7. It can be used with lenses of various magnifications. 8. Stable performance in harsh environments