This is a Stanley Jump Start, compressor, and charger for USB devises as well as a 120V outlet for an extension cord. The Stanley sites state the Features & Benefits are: - Offers both 12-volt and USB outlets to charge personal electronics - High-powered LED light that rotates 270 degrees - 120 PSI Compressor with Backlight Gauge -Heavy-duty brass tipped SureFit™ compressor nozzle securely connects to tire valve stems -Reverse polarity alarm to alert when there is an improper connection -Power and charge indicator -All Metal Powder Coated Clamps - Built-in 120V AC charger, recharges unit with standard household extension cord.
I purchased this a few years ago and have never used it ... it wants a good home. It is on sale at Walmart for $80