... 1.JYK-A vaccine cooler box 2.4000+12,000mAh lithium battery 3.C/F dual display 4.One key operate 5.2- ... temperature and user settings box temperature, dual temperature real-time display; refrigeration, freezing, fans, battery power, temperature control status at a ... batteries ---- through the built-in lithium battery lithium battery to provides(7.4V,4000+12,000mAh) Diabetics travel product JYK-A vaccine ...