1. Builtin rechargeable battery: Comes with a builtin rechargeable lithium battery, eliminating concerns about power supply. It ensures extended usage without the need for frequent battery replacements. 2. Adjustable emissivity: The thermal camera viewer's emissivity can be adjusted from 0.1 to 0.99, enabling precise temperature measurements and accurate results in various scenarios. 3. Wide field design: Equipped with an MLX90640ESFBAA sensor, the thermal camera viewer provides a standard field of view of 75° x 110°. 4. resolution display: The 2.4inch LCD screen features a resolution of 320 x 240, displaying the temperature, lowest temperature, center point temperature, and all coordinate points. 5. Camera function: Includes a builtin memory for capturing up to 100 images. These photos can be accessed and managed by connecting the device to a computer via a micro USB cable.