Features:High definition and clear display allow you to watch it clearly.Compatible with universal OBD II and EOBD interface.You can slightly lower your head to the dashboard and concentrate on the road when you are driving for safer driving.Auto on/off with your car, car's battery in an effectively protective condition.It is more convenient to control.Descriptions: Speed range: 0-400KMAlarm sound level: >>=30dbWith automatically brightness adjust to ensure you clearly visibleprojections.Specifications:Model:X5Working voltage:9-16VItem Size:9*5.4*1.2cmPackage Size:17*13*4cmColor:blackMaterial: ABSPackage Included:1 X Head Up Display1 X User Manual1 X Non-Slip Mat1 X OBD Cable1 X Reflective Coating Notes:Please allow slight dimension difference due to different manual measurement.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.