⏰The Ultra Fast Thermometer responds in 3-5 Seconds. What’s more, the instant read smoker thermometer support lock readouts when probe is removed, what’s more, the calibration from -3℃ to 3℃(-5℉~5℉) with high accuracy ± 1℃/±2℉ & Temp range of -58℉ ~ 572℉ (-50℃ ~ 300℃) could keep the high precision after a long period of using. Please note: The charging port is not waterproof, please fully insert the rubber cover in when clean it.