Specifications: Display : Large 3/16 inch LCD display Reading : 9999.59 hours/minutes Reading :9,999RPM Accuracy: 1 minute or 10 RPM, Quartz Lead Wires :3 1/2 feet -Two leads, one is to be wrapped around a spark plug wire and the other is a ground wire Weight: < 1.0 Ounces Voltage Supply :Self Powered with internal battery rated for 35,000 hour of operation Temperature Range -4 to 158 Fahrenheit; -20C to 70C Dimensions :Body is 2 1/8" wide x 1 7/16" high; Height is 5/8" from flat surface Package Included: 1/2/4/10x Hour meter .
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