I have Leica 310 I am using it to survey caves.
I have replaced the internal circuit so now it is also measure Azimuth and transmit Azimuth, Inclination and Distance to my android phone using Bluetooth.
The max range is 120 m but in direct sun light it is sometimes difficult to see the laser and aim to more than 10m.

It is not cheep but very reliable. I once drop it to a 80 m pit and nothing happen to it.