Stanley 450 amp jumper with compressor has 450 amps of instant starting power, with 900 peak amps of power. It includes a 120 psi compressor, dc charging plug, heavy duty metal clamps, awg cables and a high powered led light that rotates 270 degrees. This starter highlights a reverse polarity alarm for protection together with with a metal cope grip and impact defiant injection molded housing. it consists of a power or charge indicator and reverses polarity alarm.Always pay throughAmazon.com Shopping Cart or 1-Click.Your purchase will be protected by the A-to-Z Safe Buying Guarantee. Never respond to requests to send funds via wire transfer. Learn more about Safe Online Shopping.