Performance Tool W1665 900 Amp Jump Starter, Inflator and Portable Power Unit 900 Peak Amps/400 Cranking Amp Jump Starter & 300 psi Air Compressor/Inflator for pumping up tires and inflating rafts, balls, air mattresses & other misc items Reverse polarity warning light and beep signal help prevent damaging unit or battery Three LED Battery Level Indicator lets you know how much power you have left at all times & Automatic shut-off prevents over charging the battery ON/OFF Safety switch for jumper cables and equipped with 12 Volt, 12AH Sealed Lead Acid Battery 24" Inflator hose Caution: Air compressor caution: run compressor only for 10 minutes at a time continuously. Then leave off for 10 minutes before using again so that compressor can cool.