The Bosch GLM165-40 165 Ft. Laser Measure is a fully featured yet simple to use tool. It provides an easy to read backlit display that illuminates the measurements, and it delivers distance, square footage, volume and indirect measuring functions. It has a 10 measurement storage capability. This measure has addition/subtraction functionality, so the user can add or subtract measurements. The Blaze Pro includes default real-time measurement mode, adjusting the measurement the closer to or further from the target the laser measure is. It has laser precision technology and real-time measurement mode, for instant and reliable measurements up to 165 Ft., to size up the job in seconds. It is accurate up to 1/16 In. It fits in any pocket for easy access. Class IIA laser product, <1mw power output, 635 nm.