Endurance 30000km,500h Durability waterproof\dustoproof\shockproof Applicable tempreture -30 to70 degree Functions:1. Show the total mileage.2. Display fuel position.3. High beam direction of the light.4. Mutual conversion total mileage and one-way.5. Convertible speed unit MPH and KPH.6. Ensure the accuracy of the data and shock.