Unbeatable Power - Designed for heavy duty, it delivers 4500 Amp + to ensure the successful jump start of your 12V vehicles even in cold winter! 10.0L+ gas & diesel engines. Boost start a dead car battery with only one simple press..Safety & Heavy Duty – With simple-to-use mistake proof connection protecting the user, vehicle and jump starter battery. Professional-grade copper clamps are 1/2 larger, 100% copper cables designed for heavy duty..Built-in 12V Outlet - With the built-in 12V 10A socket, it works as a compact portable 12V DC power pack for your automotive products. No extra cable needed!.Micro & QC3.0 USB ports - 75% faster when charging smartphones or tablets; and save 1/2 time for the recharge..12-month warranty, 30-day money back and 24/7 friendly customer service.