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.<br> Features:<br> Made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistance, and with long service time.<br> Infrared calibrator, laser light has a long-distance, bright, and clear light, which better helps calibration adjustment.<br> Highly accurate and adjustment-free design, the calibrator utilizes laser light, with a tube straight in for a more convenient and precise adjustment.<br> The battery compartment design is simple and beautiful, the tail part can be opened by unscrewing, convenient and practical.<br> Shipment includes a full set of accessories, available on arrival and easier to use.<br> Specifications:<br> Name: Laser Calibrator<br> Material: aluminum alloy<br> Color: red, green (optional)<br> Battery: 1 * CR2 battery, 3V, 800mAh (included)<br> Power: