This is the Infrared Temperature Gauge with Stopwatch from TrakPower.

FEATURES: Displays temperatures in Fahrenheit or Celsius
          Temperature range of -27 to 428°F (-33 to 220°C)
          Stopwatch counts lap times to the nearest 0.01 second
          One second response time
          Backlit LCD screen
          One year limited warranty beginning at date of purchase

INCLUDES: Infrared Temperature Gauge with Stopwatch, Nylon Carrying Case and
            Lithium Battery

SPECS:    Display Type: Custom backlit LCD
          Display Resolution: 0.1°F or C
          Temperature Range: -27 to 428°F (-33 to 220°C)
          Ambient Temperature Range: +14 to +122°F (-10 to +50°C)
          Response Time: 1 second
          Infrared Accuracy: 4°F (2°C) or +/- 2% of reading, whichever is
            greater
          Field of View Label: 1:1 optics ratio
          Emissivity: Adjustable from 0.05 to 1.00 (1.00 default)
          Battery Life: 960 (15 second) readings, or 1 hour continuous
          Battery Type: Replaceable CR2032 lithium (included)
          Dimensions: 3.4 x 1.9 x 0.9" (85 x 48 x 23mm)
          Weight: 1.53oz (43.6g)

COMMENTS: This gauge accurately measures R/C engine temperatures, but modeler
            should always refer to engine instruction manual for proper tuning
            and set-up. Temperature alone is not an accurate indicator of
            proper engine performance.

                                                                   jxs 07/18/11
                                                                         ir/jxs