Portable Car Jump Starter, Gosin 400a Peak Current 13800mah Booster Emergency Power Source and High Capacity Power Bank with LED Flashlight, Cobalt-lithium Polymer Battery Gosin car jump starter advantage: built-In 13800mAh,four 12V vehicle only can jump start your car 3,000 times, compact and portable. Features a key switch to choose different voltages, LED indicator shows the status, 7-in-1 laptop adapters fits for various brands of laptops. 4 mobile adapters in one USB 5V/2.1A port: convenient to charge charge your mobile devices such as smart phone, MP3/MP4, GPS, camera and PSP simultaneously. 5-in-1 car jump starter power bank, auto 12V emergency starter, car battery charger, 3-in-1 mobile phone power station, 8-in-1 laptop charger and LED emergency light. The LED emergency light has 3 modes (high, strobe and SOS) and can last 120 hours.We provide you with 18 months warranty and friendly,easy-to-reach support.