Why choose our Jump Starter? Because we have the following advantages: 【Powerful 4000A Peak Jump Starter for 12V Vehicles】 This portable car jumper starter delivers 4000A peak current for quick 12V vehicle starts compatible with up to 12L gas and 10L diesel engines; a built-in boost function auto-activates for extremely low batteries supports up to 50 jumps per full charge and works reliably in -4 °F to 140°F extreme temperatures to maintain performance when needed most"" 【Versatile 160PSI Fast Air Compressor】 This car battery jump box has 4 inflation modes (car/motorcycle/bicycle/basketball) and 5 nozzles to meet all inflation needs; with 160PSI max pressure and 30L/Min airflow it inflates a 195/65 R15 tire from 30PSI to 36PSI in 1 minute and supports 4 pressure units (BAR/PSI/KPA/kg/cm²) for added convenience"" 【All-IN-1 Multi-Functional Emergency Tool】 More than a portable car jump starter it also serves as a portable tire in