Portable Inflator - press a button and within 30 seconds your tire will be inflated. Quick Tire inflation with automatic modes for preset PSI & automatic shutoff. Automatic altitude correction calibration, MAX 150 PSI. Long battery life with built in 7.4 V(2.5 Ah) Battery. Built in area for accessories such as Presta Valve, Needle & Charger cord. Compact, sleek design 8.25" x 3.5" x 2.75" Led Light