WUHAI Car Jump Starter 400A Peak Current with a Portable External Battery Power Bank Charger for Tablets Laptops and More Mobile Devices,5V 12V 16V 19V Different Output,Built-In LED Flashlight The WUHAI jump starter advantage: cost performance is best. Multi-functional emergency power source device jump start your car with a portable 12800mAh external battery charger for cellphone tablet laptop and more Electronics Built-In 5V 12V 16V 19V different voltage output ; 5V for for electronics and mobile devices power charger; 12V for Car Jump Starter;19V for laptop charger Built-In Three LED flashlight with ultra-bright flash light,strobe light and SOS signal light function. We provide you with 12 months warranty with 30-day money back guaranteed and no questions asked. If you are not happy with your purchase, simply send it back of a refund or replacement within 30 days after you receive your order.