This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and designed for long service life. Featuring high accuracy and an adjustment-free design, the calibrator uses infrared light with a straight tube for convenient and precise alignment. The shipment includes a complete set of accessories, ready to use upon arrival.Features: - Constructed from high-grade aluminum alloy, lightweight with high strength and corrosion resistance for durable performance - Infrared laser technology delivers bright, clear, and visible light over long distances, aiding in accurate calibration - Precision-engineered with a fixed focus design and straight tube for reliable and easy alignment - Battery compartment features a simple, sleek design; the tail cap unscrews easily for battery replacement - Includes a full set of accessories for immediate use and enhanced convenience Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery, 3V, 800mAh (included) - Output Power: