It's really a good little thermal camera for the price. The thermals are good, the temperature seems accurate, the build quality is good. If you need an inexpensive thermal camera this is it.The good: It has a nice quality little case that comes with it, similar to a small hard drive case. Very protective. The build quality is good. It comes with an extension cord that's around 9" long (which you will need if you have a phone case that prevents the camera from seating all the way into the USB port). The image quality is good, and it seems accurate.The bad: It doesn't overlay a real camera image with the thermal image. That's a much more high end feature. The USB port length is not adjustable, so if your phone has a case on it that blocks the body of the thermal camera from getting close enough to the body of the actual phone, then the USB port won't plug in deep enough to work. That's why you get the short USB extension cord. The cord also keeps your camera easy to move around with your other hand.It's amazing what you can do with a thermal camera. You can look at your walls, windows and ceilings to see where cold air is leaking into your house. You can check for overheating electrical components. You can see if certain parts of an electronics board are failed and heated up (for PCM and motherboard repair, etc). On cars, you can look a cold car over in the morning and see if there are any warm spots. Warm spots indicate that some piece of electronics is running when it shouldn't be, causing a parasitic draw. You can spot bad bearings in a spinning pulley that are beginning to heat up. You can see if your brakes work evenly on both sides of the car, or if you have a bad wheel bearing. You can see if coolant is flowing properly thru a radiator, or if a thermostat is open and flowing water. It's really good for automotive diagnostics.If you are looking for a budget thermal camera, this is it!