Dear customer, the inner screen of this night vision telescope is a 2.5-inch ultra-high-definition screen, and the outer screen size is 98*48mm. In addition, there is a magnifying window with a 6x magnifying glass to maximize the scenery and fully expand your field of vision. Not only that, it also includes 8x optical zoom and 4x digital zoom, with it, you can have the pleasure of observing, so that you no longer miss the wonderful moments of wild animals. 

No, this is night vision not thermal imaging. 

It needs to use 8 AA batteries for power supply (battery not included), and also supports external mobile power bank for power supply. 

Yes. The screw holes on the bottom of the night vision binoculars can be directly attached to a tripod, helping you to stabilize the lens while shooting.