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 laser 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, providing lightweight durability, high strength, and corrosion resistance- Infrared laser technology delivers bright, clear, and visible light over long distances, enhancing calibration precision- High accuracy with no need for adjustments; laser beam aligns straight through the tube for improved convenience and precision- Simple and sleek battery compartment design; tail cap unscrews easily for battery replacement, offering practical and user-friendly operation- Complete accessory set included for immediate useSpecifications:- Name: Laser Calibrator- Material: Aluminum alloy- Color: Red, Green (optional)- Battery: 1 x CR2 battery, 3V, 800mAh (included)- Power: