HKS Turbo Timer Type-1 Black is a full featured Turbo Timer that combines all the features of the Turbo Timer Type-0 with added monitoring and metering functions such as RPM, time to speed/distance, peak hold & warning features and a stopwatch for lap times. Unique to the Type-1 Black is that its metering and displays are in MPH and SAE standard readings. Ex. 0 to 60 MPH, 60 foot, 1/8 mile & 1/8 mile times with trap speeds in MPH. An audible "Beep" can be activated or deactivated to "hear" the countdown. ADD/Hour Meter Mode a reset able hour display that maintains a continuous total of engine running time in hours. Because routine maintenance should be based on engine running time not necessarily vehicle mileage.