Features: Built-in rechargeable lithium battery, Micro USB interface, you do not need to worry about the battery. The refresh rate is 8Hz, the target temperature measurement ran-ge is -40~+300& 8451;, and the use environment is 0~50& 8451;. The emissivity can be adjusted from 0.1 to 0.99 range. Sensor probe field angle, default 75 degrees*110 degrees MLX90640BAA probe. 2.4 inch LCD screen resolution is 320*240, the screen shows the highest temperature, the lowest temperature, the center point temperature, displays each coordinate point. The measurement accuracy is ±2& 8451; and the center area is 0~100& 8451;. Camera function: built-in memory, you can take 100 photos. Once the Micro USB cable is connected to the computer, you can view, copy, and delete the images on your computer. Specifications: Material: ABS Color: black Display: 2.4 inch color display, 320 * 240 Resolution: 32*24 Field of view: 75° * 110° Temperature measurement ran-ge: -40& 8451;~300& 8451; Measurement accuracy: ±2& 8451; Refresh rate: 8Hz No calibration required Emissivity: 0.1~0.99 adjustable Battery: 1 * lithium battery, 1000mAh (included) Recharge time: about 2 hours Power: Micro USB 5V/1A Working temperature: 0& 8451;~50& 8451; Item size: 160 * 56 * 20mm / 6.3 * 2.2 * 0.8in Package size: 180 * 100 * 30mm / 7.1 * 3.9 * 1.2in Package weight: 121g / 4.3ounce Package list: 1 * Thermal Imager