The Brantz Laser 3 rally computer is a highly sophisticated, high precision instrument with multiple functions, ideal for both clubman and professionals.Features include -24hr time of day (HH:MM:SSSS)2 Stopwatches including: Zero, freeze, hold and auto start6 Digit distance displays (000.000) including: Up/down counting, zero, freeze and holdDisplays: Current speed, maximum speed, average speedCan be calibrated in miles or kilometersProgrammable digital fuel gaugeAuto reverse optionOptimisation of car performance tuning using acceleration figures: 0, 30, 50 or 70 mph/kph to 60, 100 or 120 mph/kphStanding start times up to 1 mile/kilometer or 1/4 mile/kilometerCase dimensions: 140mm x 80mm x 35mm.Please note: The Laser 3 rally computer requires a speed sensor to operate.