1.High-end aluminum case with first-class surface process technology makes this power bank superior. 2.Guaranteed safety: overcharge & over-discharge protection.Input overvoltage protection & output overvoltage protection. Output current protection and short circuit protection. 3.Compatible with multiple digital equipment. Packing Gift card box or simple white box Custom design box as per order demands. Export packing: Gift box-Inner carton-Export carton Delivery Shipping methods: DHL, UPS, FedEx Delivery time: 7days after payment confirmed