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. Specifcation Accuracy: ±1.5mm.Operating Range: 70m.Power Supply: 2 x AAA Batteries (Included).Protection Class: IP 54 (dust & water splash).