PB107 Dual USB iphone PowerbankFeatures1.Safety:It has multiple circuit protection systems,Website:http://www.chargersuppliers.com,can avoid over charging,over discharging , over current, short circuit etc.2.Popular: Fashionable,durable,colorful,portable,useful,etc.3.Good quality: All our products would be strictly tested before delivery.4.High efficiency: Power efficiency 90% ,energy- ...