I upgraded to the Leica 3500.com and Kestrel 5700X with Applied Ballistics. They are both Bluetooth and work together very well. I can mount both on my rifle, or use them independently. I really like my rangefinder mounted on my rifle, it is very quick and stable. The Leica 3500 connects to the Kestrel 5700X by Bluetooth, you range the target, the Leica displays the distance and sends the distance, inclination and heading to the Kestrel. The Kestrel calculates and displays the firing solution, and sends it to the Leica which also displays the firing solution. It is very easy and fast. The Kestrel can be tripod mounted with a weather vane and continuously monitor the wind if you like, but it needs to be fairly close to the Leica to communicate. I realize this setup is not for everyone, but I really like it. It is a far easier, and more reliable way to hold the rangefinder on target. In any event take a look at the Leica 3500.com and Kestrel 5700X with Applied Ballistics.