The Taylor 9847N Pro Waterproof Instant Read Thermometer is a pen-style digital thermometer. Temperature range -40-450 Farenheit or -40-230 Celsius. On/Off switch and auto shut off to conserve battery life. Hold feature for easy reading. One-second updates. 3 inch stainless steel stem. Anti-microbial plastic storage case inhibits growth of pathogens. Waterproof. 1.5 volt battery included. NSF Listed.