This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and designed for long service life. Featuring high accuracy and an adjustment-free design, the calibrator uses infrared 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, offering lightweight, high strength, corrosion resistance, and durability - Infrared laser provides long-distance, bright, and clear visibility for improved calibration and alignment - High accuracy with no need for adjustments; laser design with straight tube enables precise and easy alignment - Simple and sleek battery compartment design; tail cap opens by unscrewing for easy battery replacement - Complete accessory set included for immediate use and convenience Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery, 3V, 800mAh (included) - Power: