Built-in rechargeable lithium battery, micro-USB interface, no need to worry about the battery Refresh rate is 8Hz, target temperature measurement range is -40-+300, and the use environment is 0-50 Emissivity can be adjusted from 0.1 to 0.99 2.4-inch LCD screen resolution is 320*240, the screen displays the highest temperature, lowest temperature, center point temperature, and displays each coordinate poin Camera function: built-in memory, can take 100 photos. After connecting the Micro-USB cable to the computer, you can view, copy and delete images on the computer. Display: 2.4-inch color display, 320*240 Resolution: 32*24 Field of view: 55x35 Temperature measurement: 40-300 Measurement accuracy: 2 Refresh rate: 8Hz No calibration required Emissivity: 0.1-0.99 adjustable Charging time: about 2 hours Power supply: TYPE-C Working temperature: 0-50 (The product printed words depending on the batch, but this does not affect use) Color:As Shown Material:ABS Package Contents: 1 * Handheld Thermal Imager 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.