"The Armasight Helios HD is a family of Thermal Imaging bi-oculars with professional 75mm and 100mm Germanium (Ge) objective lenses. The bi-ocular design is better for sustained viewing periods and improved depth perception. The Helios HD product line is based on the latest FLIR Tau 2 VOx microbolometer core technology and includes a variety of different models, each optimizing performance, price and state-of-the-art capabilities for a variety of uses and missions. The Helios HD is a solid-state, uncooled, long-wave infrared, magnified, dedicated handheld thermal imager intended for day and nighttime missions. 75mm Objective Germanium Lens Options Easy and intuitive Drop-down user interface Digital E-Zoom: 1x, 2x, 4x and 8x Imaging Filter Algorithms: - Active Contrast Enhancement (ACE) - Second Generation Digital Detail Enhancement (DDE) - Smart Scene Optimization (SSO) - Information-Based Histogram Equalization (IBHEQ) - Silent Shutterless Non-uniformity Correction (SSN) Color Modes: White Hot/ Black Hot/ Rainbow/ Various Color Modes Extended Operation Time with Optional External Battery Power Supply Recording: Video Output /Optional Video Recorder with onboard replay Wireless remote control CNC machined aircraft-aluminum alloy construction Rapid start-up Made in the USA Helios HD Thermal Imaging bi-oculars are characterized by their simple but intuitive controls, functions and features that are lay"