Pen structure, reusable, low power consumption, high stability, high accuracy, compact structure, simple operation, ideal for measuring: drinks, milk, coffee, automatic shutdown after 10 minutes, food and barbecue, on and off button, button for two units of measurement, high temperature block button, measuring range -50 ?? C- + 300 ?? C / -58 ?? F- + 572 ?? F, supply 1.5V (LR44) x1