The X4 is meant for the outdoors. 
The X4 also offers the same rugged construction as the X3 and e7400x: IP65 and 2-meter drop tested. Able to measure at 500’ (150m) with the pointfinder camera, you have plenty of range with certified accuracy in any kind of lighting. 

Also compatible with the DST 360. 
The DST 360 is a smart tripod and adapter set that extends the measurement possibilities of your X4. With the DST 360, your X4 turns into a professional measurement station—you can take point to point (P2P) measurements from one location. 

Capable of Point-to-Point (P2P) measurement technology. 
When used with the DST 360, the X4 can combine rotation, angle, and distance data to produce highly accurate Point-to Point (P2P) measurements, which allows you to accurately measure distances between any two points from a third position. 

Mobile device connectivity for the DISTO Plan App. 
Use the DISTO Plan App to access Sketch, Document, and Smart Room features to create detailed CAD-ready floor and wall plans, including doors and windows. Export your plans as .DXF or .DWG files. 

Want to learn more? 
DISTO Technology Overview 
Point to Point (P2P) Technology Overview 
Improving LDM performance outdoors – How can I see the laser spot better?