... 1.Diabetes cooler box for insulin 2.4000+12,000mAh lithium battery 3.C/F dua display 4.One key operate ... store insulin ,diabetes medications,equiping with 16,5hours backup lithium battery Lightweight portable. Pocket-sized body, small fine, configuration ... small transformer to provide 12V.(12V) 3.Lithium batteries ---- through the built-in lithium battery lithium battery to provides(7.4V,4000+12,000mAh ...