The Wagan 3-in-1 Air Compressor is an air compressor, pressure gauge, and work light combination, that is compact enought to keep in the trunk or under the seat. With a 275PSA output it is able to inflate a 16" tire in just over 5 minutes. The built-in adjustable angle light is ideal for outdoor use as well as emergencies under the hood. Simple 12 volt power from the lighter or DC power source in your vehicle. Features a durable high-impact casing and solid brass valve connector, and measures 3.75" x 5.5" x 8.5".