Function: car emergency start, mobile power bank, LED emergency light Very convenient .can be charge at home and car. Short circuit, over-charge, and over-heat protection,very safe. This jump starter can start Gasoline car below 6.0L Start car at one time on cold & hot areas.( on -20°C~60°C areas) 2 USB Charging ports support for charging various electronic devices. Highlight LED lights+flashing signal light+SOS rescue lights , convenient for field inspections, camping and other night activities.