With LCD display, the most practical tire pressure gauge. RCC-290A:four display units: PSI,KPA,BAR,KG/CM²RCC-290B: English pronunciationRCC ... order a variety of colors )Reminder : Pressure is a tire life, Tire pressure is too high and low point, will reduce its service ... light, feel the waste oil, feel sluggish; if too high tire pressure: Tire looks quite, but the middle part of excessive wear ...