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:Name: Laser Calibrator Material: aluminum alloy Color: red, green (optional)Battery: 1 x CR2 battery, 3V, 800mAh (included)Power: