The fully re-designed digital air pressure gauge features precise digital pressure measurement and ergonomic design. Featuring composite sides for a comfortable feel and good grip. The backlit display with XL digits can be read in all positions thanks to the swiveling duo head. Compatible with Presta/Schrader valves and the display can be switched from bar to PSI at the push of a button. Incremental pressure deflation is possible with the pressure release button and real-time measuring (gauge does not require removal from the valve stem to reset and give new reading). Automatic switch-off function saves battery life. Includes battery.