Built-in storage: Built-in SPI flash memory chip can store 100 pictures. Connect computer or mobile phone via data cable to view and copy image files shell: The shell adopts FR4 epoxy resin plate to improve internal components and prolong service life Charging mode: Li-ion battery power supply, USB C charging, battery life up to 4 hours, can be used during charging Display temperature: display and track the maximum, minimum and center temperature on the 2.8 inch screen with 320x240 resolution Compact and portable: measuring range from - 40 ℃ toand300 ℃, 8Hz dynamic rate. Small size, easy to carry, integrated design, no external equipment Colour:black Material:pcb Size: 85 x 55 x 30mm Package Contents: 1 x thermal camera Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.