PROFLATE 16 New pressure indicator, which pops out when a Co2 cartridge is in the unit and is charged Built in water and dirt resistant shield that is automatically activated during use State of the art auto detection of Presta and Schrader valves A new technology, called EZ Connect/Auto Detect that automatically grips the valve when inflation starts allowing for fast ONE HAND OPERATION DONT MISS OUT ON THIS EXCELLENT PRODUCT