... quality,low price 4.CE,FCC,ROHS 2500mAh battery mobile power bank for cell phoneAdvantages1.OEM service ... friendly material5.Portable,rechargeableSpecification Product's nameUSB chargerCapacity6600mAhInternal battery typeLi-polymer cellSize105*55*13mmColorWhite,black,red and ... phone time6-8hoursOperating tempereture -5°C ~ 40°C Storage tempereture-10°C ~ 50°C Warranty1 yearsCertificatesCE,FCC, ...