Perfect-Prime IR0002, Infrared (IR) Thermal Imager & Visible Light Camera with IR Resolution 3600 Pixels & Temperature Range from -20~300&Acirc;&deg;C, 6Hz Refresh Rate Note: Please use 4 X AA Alkaline battery 1.5 V ONLY (No 1.2 V rechargeable battery); Best viewing distance: 1.6 ft to 16 ft IR Image Resolution: 60 x 60 , 3600 pixels, Storage memory: Micro SD Card , 4GB for image storage Thermal Sensitivity:0.15C, Temperature Range: -20 to 300 C Temperature Accuracy:+/- 2 % or +/- 2 C Display Screen: 2.4" Full angle HD, Visible Image Resolution:0.3 mega pixels