The Topeak SmartGauge D2X is a sleek, lightweight and compact digital tire pressure gauge that works seamlessly with Presta and Schrader valves without changing internal head parts. The digital gauge provides accurate pressure readings up to 260psi / 18bar. The illuminated 360deg rotating gauge is easy to read from any angle in daylight or darkness. Compatible with bike / motorcycle / car tires, forks and shocks and the Air Pressure Adjusting Mode continuously reads pressure when using the air release button to fine tune tire pressure.