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 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, providing lightweight durability, high strength, and corrosion resistance for extended use - Infrared laser technology delivers bright, clear, and visible light over long distances, enhancing calibration precision - Highly accurate and adjustment-free design uses laser light with a straight tube for improved convenience and accuracy - Simple and sleek battery compartment design; tail cap unscrews easily for battery replacement, offering practical and user-friendly operation - Includes a complete set of accessories for immediate use Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery, 3V, 800mAh (included) - Power: