3-in-1 multifunctional tool: This device serves as a precise tire pressure gauge, an inflator when connected to an air compressor, and features a built-in vent valve to quickly release excess pressure. High accuracy: Professionally calibrated for readings within 1 percent of actual tire pressure, with a 0.1 display resolution. Measures 0-250 PSI (0-17.2 bar / 0-1724 kPa / 0-17.5 kgf/cm2). Durable design: Constructed with robust stainless steel and brass components for long-lasting use. Compatible with cars, SUVs, trucks, motorcycles, and bicycles. User-friendly: Auto on/off after 20 seconds of inactivity to conserve battery. Includes a quick-locking air liner for secure valve attachment. Key features: - Measurement range: 0-250 PSI - Accuracy: ��1 percent and 0.1 PSI - Units: PSI, BAR, kPa, kgf/cm2 - Power: DC 3.1V (2x AAA batteries included) - Accessories: Valve caps, brass air mandrel, sealing tape, and more. Easy operation: Attach to the tire valve for pressure reading or inflation. Vent valve allows quick pressure adjustment.