Adavantage:

1. Popular. Fashional design, nice appearance, elegant, colorful, easy to carry and use, it's popular.

2. Portable design.Light and easy for carry.
3. High capacity. It will be able to fully charge your smart phone many times.
4. High quality. All of our products would be strictly tested before shipment for usb charger power bank.
5. Environmentally friendly. Power efficiency >80%, more energy-efficient and environmentally friendly.
6. Safety. It has mulriple circuit protection system, can avoid overcharge, over discharging, short circuit etc.