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 utilizes infrared light with a straight tube for convenient and precise alignment. The shipment includes a full set of accessories, ready to use upon arrival.Features:- Made of high-grade aluminum alloy, lightweight, durable, and corrosion resistant- Infrared laser provides long-distance, bright, and clear beam for improved calibration- High accuracy with no need for adjustments; laser design with straight tube enables precise alignment- Simple and sleek battery compartment; tail cap opens by unscrewing for easy battery replacement- Includes a complete set of accessories for immediate useSpecifications:- Name: Laser Calibrator- Material: Aluminum alloy- Color: Red, Green (optional)- Battery: 1 x CR2 battery, 3V, 800mAh (included)- Power: