This portable detection instrument is for all-weather, and it’s personal design and elastic materials makes operation easy, comfortable, and anti fatigue. The button located on the components above, can be easily operated by hand index finger. It’s concise, sturdy and durable. Visible distance can be 2000 meters in daytime, personnel, vehicles and other targets can be found within 1000 meters at night, and can realize continuous monitoring. It’s designed specially for security forensics, automotive night vision, field investigation, camping, whitewater rafting and other related needs.