This is a Thermal Imaging Phone Camera for any Android Phone. It's called Thermal Seek. Download the app, plug into your phone and see the cool and heat imagine. Great use electricians, HVAC techs, plumbers and construction workers. Can even use it on your body and see your poor areas of blood flow. I used it to find leaks in AC coils as an HVAC technician. Look it up they go for $200-$240. I purchased it for $215 just a couple years ago. Has been used about 15 times and I always kept it clean and in the protected case. Selling for $80 OBO