Features: The Steak Genius Is A Folding Thermocouple Instrument Featuring An On-Screen Doneness Indicators From Very Rare (R-) To Extremelywell Done (Wd+) Eliminate The Need To Learn Steak Temperaturesthis Nsf Listed Unit And Replaceable Probe Is Made Of Durable Abs Plastic And Is Ipx7 Waterproof Rated. This Easy-To-Use Device Turns On And Off By Simply Flipping The Probe Open And Closed, And Includes An Automatic Shut-Off After 10 Minutes To Conserve Battery Life.