... be customer's size and color 4.OEM, ODM welcome portable charger power bank Product size: 102*31*31mm Product weight ... Efficiency: 85%Shell material: Cover high-quality ABS + piano paint; Battery Type: lithium-ion polymer batteryAdvatage: safe, efficient, durable electric power ... use for all USB 5V device, such as cellphone,Iphone,MP3,MP4,PSP,Camera; Color: black, white, red, pink portable charger power ...