No calibration requiredDisplays center point, maximum and minimum temperatureMake photos (90 photos can be saved, connected to a computer, copied and deleted)Rechargeable battery, 210mAh17. Built-in 4M memory chip, can about 90 picturesModule: MLX90640_CSBUsing MLX90640ESF_BAB infrared sensorResolution: 32x24Temperature measurement range: -40~300Measurement accuracy: +/-2C (central region, 0~100C)Working temperature: 10~50Working humidity: less than 70%Refresh rate: 8HZField of view: 55x35TFT size: 1.8 inches (display resolution: 160x128)Power port: USB Type-C 5V/1AProduct size: 66x46x20mmInstructions1. Charging: Use USB Type-C cable, 5V/1A2. Turn on/off: Long press the middle button4. Take a photo: press the middle button5. Review photo: press up or down key6. Exit the photo: long press the up or down key7. Copy photos: Connect the computer with a usb cable, and the computer will get a disk.Note: You cannot change the photos in the disk or put other files into the disk connecting to the computer, fully charge and shut down.Colour:blackMaterial:plasticPackage Contents:1 x Thermal ImagerOnly 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.