The Taylor Pro Waterproof Instant Read Thermometer - Pen Style features an easy-to-read LCD readout, an on/off button and auto shut off function to conserve battery life, and one-second updates. The temperature range is from -40 degrees F to 450 degrees F, and the thermometer is waterprood. Made of stainless steel with a 3" stem. Recalibratable to comply with HACCP requirements.1.5 volt battery included. NSF listed.