The Asp handheld observational thermal monocular is equipped with a 640�512 infrared detector and a 1024�768 OLED display. It supports functions of observation hot spot tracking distance measurement Wi-Fi hotspot and so on. The high-sensitivity built-in thermal detector provides you with clear view even in total darkness. The monocular is mainly applied to scenarios such as patrolling law enforcement searching and rescuing drug enforcement anti-smuggling criminal seizing hiking travel and hunting etc. - FUNCTIONS: - Distance Measurement: The device realizes distance measurement function after marking the top and bottom of target and input the target height. - Hot Spot Mark: The device detects and marks the hot spot of highest temperature. - Mode Switch: Device supports pallet switch and distance measurement. - Storage: Built-in memory module supports video recording/snapshot capturing. - Digital Zoom: Device supports 1� 2� and 4� digital zoom. - Wi-Fi Hotspot: Device can capture snapshots record videos and set parameters via APP after being connected to your phone. - 640�512 resolution high sensitivity detector - Adaptive AGC DDE 3D DNR - 1024�768 resolution 0.39-inch OLED display - Built-in memory supports video recording/snapshot capturing - Wi-Fi hotspot - Built-in rechargeable Li-Ion battery - Up to five hours continuous running (with Wi-Fi hotspot function off) - Limited 3-year warranty