The ERDI LRF3500D Handheld Laser Rangefinder is a compact, high-precision device designed for one-handed use or tripod mounting, enabling accurate long-range target measurement. This laser ranging telescope utilizes a 1535nm eye-safe laser and offers a comprehensive suite of functions, including distance measurement, angle calculation, altimeter, two-point ranging, target location, and ballistic computation—meeting the demands of complex operational scenarios. Equipped with integrated GPS, Bluetooth, and Wi-Fi modules, the LRF3500D Tactical laser rangefinder scope supports seamless connectivity with mobile applications for real-time data transmission and remote operation. Its upgraded OLED projection display features enhanced clarity, illumination, and in-eyepiece data visualization, significantly improving usability and operational efficiency. Built for durability, the device is IP67-rated and operates reliably in extreme temperatures ranging from -40°C to +55°C. With a measuring range from 30 meters up to 3,500 meters, the LRF3500D Laser Rangefinder Monocular delivers consistent performance, making it an ideal solution for field surveys, border security, tactical reconnaissance, and various demanding outdoor applications.