The RIDGID Micro LM-400 Advanced Laser Distance Measure features Bluetooth technology, allowing it to be connected to smartphones and tablets to easily view, store and share data. This helps to avoid time-consuming paperwork and costly writing errors. Android and iOS Apps easily and quickly transfer and overlay measurements from the Micro LM-400 onto a photo or sketch. The LM-400 has an easy-to-read backlit 4-line display. It has a long measuring range of up to 7m and can measure angles of up to 65. Its inclination sensor can provide instant simultaneous horizontal, vertical and diagonal distance measurements. Functions Distance, Volume and area calculation, Addition and subtraction, Continuous measurement, Stake out, Self-triggering timer, Indirect measurements, Angle measurements, Bluetooth connection, Transfer/overlay data to sketches and RIDGIDSketch App for iOS and Android. Specification Accuracy & plusmn1.5mm. Operating Range 70m. Power 2 x AAA batteries (supplied). Protection Class IP54 (dust & water splash).