Racing Car Meter WHY TO CHOOSE US 1, Classic Design,Perfect Cutting Technology. 2, Clear Visual Enjoyment, LED Backlight Display Uniformity, Optical Pointer. 3, Use The USA Chips, Easy To Set Data Function. 4, With Self-Test Function, Alarm Function (Alarm sound & Alarm Backlight) Backlight Color Changeable. 5, Using Three Interface Design, Easy To Install, Several Racing Meters Can Be Connected In Series To Allow For Simultaneous Operation. 6, Rigorous Teamwork, Defect Rate Controlled Within 2%.