This professional-quality thermometer is NSF approved, waterproof, shatterproof, and can be re-calibrated. It reads from -40 - 450 degrees F. on a large-digit display that features a data-hold button. The stainless-steel stem is 5" long and the housing is stainless steel, too. A sheath with a pocket cllip is printed with a temperature guide. Auto shut-off helps save the battery which is included.