With Sig Sauer dropping the new ECHO SV50 LRF thermal, we knew we had to get our hands on it and put it to good use. We ran this unit all winter and put a hurtin on some song dogs helping out many ranchers around their calving lots and other animals trying to make it through this brutal Montana winter. Being the only thermal offered with a lifetime warranty, the integrated BDX system, it is for sure one the best thermal units on the market today!