This is the Duratrax Flashpoint Infrared Temperature Gauge. FEATURES: Monitors temperatures of engines, sealing irons, electric motors and battery packs Wireless for safe and accurate readings without touching the heat source-simply point, push a button, and read the results Palm sized 1.13 ounce reads wide temperature range from -27° to +428° Farenheit (-33° to +220° Celsius) Special mode settings allow user to find, hold, and display minimums and maximums of fluctuating temperatures to provide the most accurate information Auto-off timer preserves battery power by shutting down unit after 15 seconds if not used Large LCD for easy viewing Replaceable 3V CR2032 lithium battery available at jewelry and camera counters of major retail stores One year limited warranty