The DISTO X4 improves on the X3 by adding a pointfinder camera, which lets you aim your DISTOs laser point using the full color, high-resolution displaysimply line up your desired measurement point in the on-display crosshairs and youll get a precise measurement. Just as smart and just as comfortable to use. Auto-rotating display. On-board tilt sensor for Smart Horizontal. Includes Bluetooth for transferring measurements to your computer or mobile device. And it works seamlessly with our DISTO Plan App.