RIDGID 36813 Model Micro LM-400 Laser Distance Meter, Distance Laser Meter Clearly view measurements on the large, backlit 4-line display Inclination angle measurement allows indirect measurements for hard to reach areas Class II Laser Product, Laser Type 635 nm, &lt;1 mW Allows for Bluetooth connection to smartphones and tablets to view, store, and share data Android and iOS apps available to overlay measurements onto a photo or sketch