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 * CR2 battery, 3V, 800mAh (included) Power: <5MW Diameter: 4.2mm Item size: 178 * 18 * 18mm / 7.01 * 0.71 * 0.71in Item weight: 60g / 2.12ounce Package size: 195 * 104 * 30mm / 7.80 * 4.09 * 1.18in Package weight: 131g / 4.62ounce Packing List: 1 * Laser Calibrator 1 * Screwdriver 12 * Adjustable Adapter 1 * Set of Screw 1 * Wrench When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!