This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and designed for long service life. Featuring a highly accurate, 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 for durability, lightweight handling, and corrosion resistance - Infrared laser technology delivers bright, clear, and visible light over long distances, enhancing calibration accuracy - Precision-engineered with a fixed focus design and straight tube for reliable, tool-free adjustments - Ergonomic battery compartment with screw-off tail cap for easy access and secure closure - Complete accessory set included for immediate use Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery, 3V, 800mAh (included) - Power: 3V