This laer calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistance, and with long service time. Highly accurate and adjustment-free design, the calibrator utilizes infrared light, with a tube straight in for a more convenient and precise adjustment. Shipment includes a full set of accessories, available on arrival and easier to use.Features:Made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistance, and with long service time.Infrared calibrator, laser light has a long-distance, bright, and clear light, which better helps calibration adjustment.Highly accurate and adjustment-free design, the calibrator utilizes laser light, with a tube straight in for a more convenient and precise adjustment.The battery compartment design is simple and beautiful, the tail part can be opened by unscrewing, convenient and practical.Shipment includes a full set of accessories, available on arrival and easier to use.Specifications:ame: Laser CalibratorMaterial: aluminum alloyColor: red, green (optional)Battery: 1 * CR2 battery, 3V, 800mAh (included)Power: <5MWDiameter: 4.2mmItem size: 178 * 18 * 18mm / 7.01 * 0.71 * 0.71inItem weight: 60g / 2.12ouncePackage size: 195 * 104 * 30mm / 7.80 * 4.09 * 1.18inPackage weight: 131g / 4.62ouncePacking List:1 * Laser Calibrator1 * Screwdriver12 * Adjustable Adapter1 * Set of Screw1 * Wrench