product description: Our mini infrared laser, a compact and precise tool for accurate measurements. This device emits intense, bright lines at a perfect 90-degree angle, making it ideal for a variety of applications where precision and alignment are critical. Main features: Ultra-compact design: The mini size makes it very portable and easy to use 90-degree alignment: Emits a 90-degree laser line for clear, precise measurement of degrees and precise alignment. Bright infrared laser: Equipped with a laser with strong infrared rays ensuring visibility even in bright environments. High Accuracy: Provides high precision measurements, suitable for professional use and DIY projects. Battery Powered: Requires 3A battery (not included) for operation. Batteries are not shipped due to restrictions.