100% Brand new and high quality!! Temperature measurement:-50 C~+300 C(-58 F~572 F) Temperature accuracy:±1 C/ F Power - saving mode:10minutes auto power off function Power Supply: 1.5V(AG13) P (Not include) ON/OFF keys:switching C /  F Key : the display mode，this button can be  C /  F conversion function HOLD key : temperature conditions in the display， press the LCD display can be maintained at HOLD state，then a measurement of the recovery temperature to detect when running HOLD function， LCD display HOLD meet MAX/MIN key to view the maximum / minimum Random Color: white and Black Length: 237mm Notes: 1. Please allow a little color difference and little measure error. 2. The color of the actual items may slightly vary from the above images due to different computer screen， thanks for your understanding.