VEE GEE Scientific MiniFold Digital Thermometer is idea for portable thermometer needs. Fits in your pocket or on a key chain. This unit features a dual scale with Min/Max. The on/off switch, Min/Max, and Scale buttons are located on the face for simple access. The 55mm stem folds into the thermometer body keeping the instrument compact and safe while closed. Also includes a CR2032 battery with easy to change back closer.