This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and built for long service life. Featuring high accuracy and an adjustment-free design, the calibrator uses infrared laser light, with a straight tube for more convenient and precise alignment. The shipment includes a full set of accessories, ready to use upon arrival. Features: - Constructed from high-grade aluminum alloy, lightweight, durable, corrosion resistant, and designed for long-term use. - Infrared laser calibrator emits bright, clear, long-distance light to assist in accurate calibration and alignment. - High-precision, adjustment-free design utilizes laser light with a straight tube for convenient and accurate adjustments. - Battery compartment features a simple, sleek design; the tail cap unscrews easily for battery replacement, offering convenience and practicality. - Includes a complete set of accessories for immediate use upon delivery. Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery, 3V, 800mAh (included) - Power: 3V