This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and built for long service life. Featuring high accuracy and an adjustment-free design, the calibrator utilizes infrared light with a straight tube for more convenient and precise alignment. The shipment includes a full set of accessories, ready to use upon arrival. Features: - Constructed from high-grade aluminum alloy, ensuring lightweight durability, strength, and corrosion resistance - Infrared laser technology delivers bright, clear, and visible light over long distances, enhancing calibration precision - Precision-engineered with a straight tube design for accurate and effortless alignment - Simple and sleek battery compartment; the tail cap unscrews easily for quick battery access and replacement - Complete accessory set included for immediate and convenient use Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery, 3V, 800mAh (included) - Power: Infrared laser