With over 30 years experience in the design and development of motorsport rally technology, Terratrip are one of the market leaders and provide high accuracy rally computers which are robust and reliable.This latest Terratrip 303 Plus V4 has the following features -Two distance displays (total up to 999.99 and interval up to 99.99)Speed IndicationStopwatchTime of day (which automatically freezes when the stopwatch is stopped)Speed and average displaySelectable for miles or kilometres calibrationStores 2 calibration settings even when powered downBacklit displayCount up and count down facilitySplit (freeze) functionOptional remote display for speedInterval distance or average speedTwo probe inputsOption remote zeroing availableUser selectable high resolutionThe 303 Plus V4 requires a sensor (probe) to operate.Dimensions -Length: 138mmHeight: 81mmDepth: 27mm