Armasight sidekick 640 thermal monocular - Armasight Sidekick 640 1x19mm Thermal Monocular

First off, the folks at Armasight have been excellent to deal with. Their customer service and efforts to help with questions, have been the best I've ever dealt with in a company. I purchased and received this unit after reading, studying, and comparing all similar brands and types of units before making a decision. I immediately started messing with it to get the controls and functions figured out, and found them to be easy and simple even for a tech-challenged knucklehead like me. I have other weapons mounted thermals that are dedicated to their own firearms, so I have some experience with thermals in general, and this sidekick is easier to use than those other units, and the performance is excellent. The single CR123 battery use is short lived, so you'll want to expand your power source for longer, sustained use. I called the company and inquired about a specific external power source that I wanted to use before hooking it up, and this I've found, is a much better way to go for better use and battery life over an extended time period. After owning the unit for about three weeks, I received an email from Armasight with instructions on updating the unit software with an improvement to the operating system, and everything was made simple and free to complete using my computer, and a quick download. I have two other thermal units from two different "high-end" companies, and have owned them for a few years now, and I have never once received software updates, or options to enhance the performance of the units, nor have I ever been contacted afterwards to give my opinion about how the units are operating or could be made better in the future. I really like this little unit and have had a good time getting familiar with it and stretching its capabilities. I would seriously recommend this unit if you're looking for a small, handheld, or head mounted unit, and I would definitely recommend Armasight as a company.