VPC034D, Portable power bank, with large capacity from 2400mAh~5200mAh for choice. It has the function of over-charge protection, discharge protection, over-current protection, short circuit protection. Our product has the certification of CE, RoHS and FCC. Customized design welcomed, you can choose the logo, the package and the color as you like. Materials: Metal Dimensions (mm): 45.5x 94 x 22 Minimum order quantity:50 Colours: Multi-colors for your choice Imprint Options:Color Imprint, Laser Engrave Capacity: 5200mah Leadtime: 3 - 10 working days