Just Mobile Gum Plus packs an impressive 4,400mAh of power and 1,000mA of output, that can charge your iPhone up to 4 times and able to juice up your iPhone to 90% in just an hour. With Just Mobile Gum Plus, you can enjoy more music, more video, more talk, more games, more internet on your iPhone. It also works for your iPod, Smartphone and other USB powered devices.